MATHEMATICS of PURE CONSCIOUSNESS 1. Introduction Adi Shankara, the Foremost Exponent of Advaita Vedanta, Declared “Brahman Al
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[Math.LO] 2 Mar 2011 39,18B40
GROUPOIDS, IMAGINARIES AND INTERNAL COVERS EHUD HRUSHOVSKI Abstract. Let T be a first-order theory. A correspondence is established between internal covers of models of T and definable groupoids within T . We also consider amalgamations of independent diagrams of algebraically closed substructures, and find strong relation between: covers, uniqueness for 3-amalgamation, existence of 4-amalgamation, imaginaries of T σ, and definable groupoids. As a corollary, we describe the imaginary elements of families of finite- dimensional vector spaces over pseudo-finite fields. The questions this manuscript addresses arose in the course of an investigation of the imag- inary sorts in ultraproducts of p-adic fields. These were shown to be understandable given the imaginary sorts of certain finite-dimensional vector spaces over the residue field. The residue field is pseudo-finite, and the imaginary elements there were previously studied, and shown in fact to be eliminable over an appropriate base. It remains therefore to describe the imaginaries of finite-dimensional vector spaces over a field F , given those of F . I expected this step to be rather easy; but it turned out to become easy only after a number of issues, of interest in themselves, are made clear. Let T be a first-order theory. A correspondence is established between internal covers of models of T and definable groupoids within T . Internal covers were recognized as central in the study of totally categorical structures, but nevertheless remained mysterious; it was not clear how to describe the possible T ′ from the point of view of T . We give an account of this here, in terms of groupoids in place of equivalence relations. -
Oort Conjecture for the Moduli Space of Abelian Surfaces
COMPOSITIO MATHEMATICA The Andr´e{Oortconjecture for the moduli space of abelian surfaces Jonathan Pila and Jacob Tsimerman Compositio Math. 149 (2013), 204{216. doi:10.1112/S0010437X12000589 FOUNDATION COMPOSITIO MATHEMATICA Downloaded from https://www.cambridge.org/core. IP address: 170.106.35.234, on 28 Sep 2021 at 16:32:51, subject to the Cambridge Core terms of use, available at https://www.cambridge.org/core/terms. https://doi.org/10.1112/S0010437X12000589 Compositio Math. 149 (2013) 204{216 doi:10.1112/S0010437X12000589 The Andr´e{Oortconjecture for the moduli space of abelian surfaces Jonathan Pila and Jacob Tsimerman Abstract We provide an unconditional proof of the Andr´e{Oortconjecture for the coarse moduli space A2;1 of principally polarized abelian surfaces, following the strategy outlined by Pila{Zannier. 1. Introduction and notation Let Ag;1 denote the coarse moduli space of principally polarized abelian varieties of dimension g. Our main theorem is the following, proving the Andr´e{Oortconjecture for A2;1. Theorem 1.1. Let V ⊂ A2;1 be an algebraic subvariety, which is equal to the Zariski closure of its CM points. Then V is a special subvariety. Here, a subvariety means a relatively closed irreducible subvariety. Varieties will be identified with their sets of complex-valued points. We follow the general strategy of Pila{Zannier. Set Hg to be the Siegel upper half space t Hg = fZ 2 Mg×g(C) j Z = Z ; Im(Z) > 0g: We denote by π : Hg !Ag;1 t g(g+1)=2 the natural projection map. The set fZ 2 Mg×g(C)jZ = Z g is naturally identified with C , g(g+1)=2 g(g+1) identifying Hg with an open domain. -
1 1. Stability Stability Is Fundamentally a Local Hypothesis, Indeed A
1 1 1. Stability Stability is fundamentally a local hypothesis, indeed a combinatorial hy- pothesis on a bipartite graph. A bi-partite graph is just a triple of sets G = (G1;G2; I) with I G1 G2; one thinks of I as relating elements of ⊂ × G1 to elements of G2. An example is Ln, where G1 and G2 are two copies of 1; : : : ; n , and I is the graph of the order relation i < j. f g Definition 1.1. A bi-partite graph is stable if for some n, G does not embed the graph Ln Definition 1.2. A Γ-formula a formula equivalent to a quantifier-free formula, possibly with additional parameters. A set C is Γ-algebraically-closed if for every Γ-formula E over C defining an equivalence relation with finitely many classes, each class of E is coded by an element of C.A Γ-type over C is a maximal consistent collection of Γ-formulas over C.A Γ-type p over Γ is clearly determined by its restriction to atomic formulas; we will say p is definable if there exists a formula α(y) such that xIy p iff α(y) (or dually; we will write 2 xIy or yIx interchangeably.) If p is definable, the defining formula is unique up to logical equivalence, and will be denoted (dpx)(xIy). Atomic types over Γ are assumed consistent with Th(Γ) (equivalently, with the universal theory of Γ.) Lemma 1.3. The following are equivalent: i) Γ is stable ii) For every countable Γ0 satisfying the universal theory T of Γ, there are 8 countably many atomic types over Γ0 consistent with the universal theory of Γ0. -
3 Fundamental Class 20 3.1 Bottom Fundamental Class
JAIST Repository https://dspace.jaist.ac.jp/ Title A Categorical Description of Relativization Author(s) 吉村, 和人 Citation Issue Date 2013-03 Type Thesis or Dissertation Text version author URL http://hdl.handle.net/10119/11296 Rights Description Supervisor:石原 哉, 情報科学研究科, 修士 Japan Advanced Institute of Science and Technology A Categorical Description of Relativization By Kazuto Yoshimura A thesis submitted to School of Information Science, Japan Advanced Institute of Science and Technology, in partial fulfillment of the requirements for the degree of Master of Information Science Graduate Program in Information Science Written under the direction of Hajime Ishihara March 2013 A Categorical Description of Relativization By Kazuto Yoshimura (1110069) A thesis submitted to School of Information Science, Japan Advanced Institute of Science and Technology, in partial fulfillment of the requirements for the degree of Master of Information Science Graduate Program in Information Science Written under the direction of Hajime Ishihara and approved by Hajime Ishihara Kazuhiro Ogata Mizuhito Ogawa February 2013 (Submitted) Copyright c 2013 by Kazuto Yoshimura Contents 1 Introduction 2 2 Preliminairies 5 2.1 Set Theoretic Notations . 5 2.2 Category . 9 2.3 Functor . 18 3 Fundamental Class 20 3.1 Bottom Fundamental Class . 20 3.1.1 Classes of Morphisms . 20 3.1.2 Factorization System . 22 3.1.3 Pre-Effectiveness . 27 3.2 Imaginary Fundamental Class . 29 3.2.1 Extending Fundamental classes . 29 3.2.2 Imaginary Operator . 32 3.2.3 The Strongest Extension Ability . 34 3.2.4 Dense morphisms . 37 3.3 Limit Fundamental Class . 38 3.3.1 Effectiveness . -
The André-Oort Conjecture for the Moduli Space Of
THE ANDRE-OORT´ CONJECTURE FOR THE MODULI SPACE OF ABELIAN SURFACES JONATHAN PILA AND JACOB TSIMERMAN Abstract. We provide an unconditional proof of the Andr´e-Oortcon- jecture for the coarse moduli space A2;1 of principally polarized Abelian surfaces, following the strategy outlined by Pila-Zannier. 1. introduction and notation Set Hg to be the Siegel upper half space t Hg = fZ 2 Mg(C) j Z = Z ; Im(Z) > 0g: Let Ag;1 denote the coarse moduli space of principally polarized Abelian varieties of dimension g. Our main theorem is the following, proving the Andr´e-Oortconjecture for A2;1 : Theorem 1.1. Let V ⊂ A2;1 be an algebraic subvariety, which is equal to the Zariski closure of its CM points. Then V is a special subvariety. We follow the general strategy of Pila-Zannier. One ingredient we need is the following Ax-Lindemann-Weierstrass theorem: We denote by π : H2 !A2;1 6 the natural projection map. We consider H2 ⊂ R with coordinates provided 3 by real and imaginary part of the complex coordinates in C , and call a set 6 semialgebraic if it is a semialgebraic set in R . Let V ⊂ A2;1 be an algebraic variety, Z = π−1(V ), and Y ⊂ Z an irreducible semialgebraic subvariety 0 of H2. We say that Y is maximal if for all semialgebraic subvarieties Y containing Y with Y 0 ⊂ Z, Y is a component of Y 0. Theorem 1.2. Let Y ⊂ Z be a maximal semialgebraic variety. Then Y is a weakly special subvariety. Fix Fg ⊂ Hg to be the standard fundamental domain [8]. -
View of first-Order Logic and O-Minimality
TAMENESS RESULTS FOR EXPANSIONS OF THE REAL FIELD BY GROUPS DISSERTATION Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of the Ohio State University By Michael A. Tychonievich, B.S., M.S. Graduate Program in Mathematics The Ohio State University 2013 Dissertation Committee: Prof. Christopher Miller, Advisor Prof. Timothy Carlson Prof. Ovidiu Costin Prof. Daniel Verdier c Copyright by Michael A. Tychonievich 2013 ABSTRACT Expanding on the ideas of o-minimality, we study three kinds of expansions of the real field and discuss certain tameness properties that they possess or lack. In Chapter 1, we introduce some basic logical concepts and theorems of o-minimality. In Chapter 2, we prove that the ring of integers is definable in the expansion of the real field by an infinite convex subset of a finite-rank additive subgroup of the reals. We give a few applications of this result. The main theorem of Chapter 3 is a struc- ture theorem for expansions of the real field by families of restricted complex power functions. We apply it to classify expansions of the real field by families of locally closed trajectories of linear vector fields. Chapter 4 deals with polynomially bounded o-minimal structures over the real field expanded by multiplicative subgroups of the reals. The main result is that any nonempty, bounded, definable d-dimensional sub- manifold has finite d-dimensional Hausdorff measure if and only if the dimension of its frontier is less than d. ii To my father, who has fallen asleep. iii ACKNOWLEDGMENTS As a graduate student, I owe thanks to many people, but I will only list a few here. -
East Meets West
East Meets West The stories of the remarkable men and women from the East and the West who built a bridge across a cultural divide and introduced Meditation and Eastern Philosophy to the West John Adago SHEPHEARD-WALWYN (PUBLISHERS) LTD © John Adago 2014 All rights reserved. No part of this book may be reproduced in any form without the written permission of the publisher, Shepheard-Walwyn (Publishers) Ltd www.shepheard-walwyn.co.uk First published in 2014 by Shepheard-Walwyn (Publishers) Ltd 107 Parkway House, Sheen Lane, London SW14 8LS www.shepheard-walwyn.co.uk British Library Cataloguing in Publication Data A catalogue record of this book is available from the British Library ISBN: 978-0-85683-286-4 Typeset by Alacrity, Chesterfield, Sandford, Somerset Printed and bound in the United Kingdom by imprintdigital.com Contents Photographs viii Acknowledgements ix Introduction 1 1 Seekers of Truth 3 2 Gurdjieff in Russia 7 3 P.D. Ouspensky: The Work Comes to London 15 4 Willem A. Nyland: Firefly 27 5 Forty Days 31 6 Andrew MacLaren: Standing for Justice 36 7 Leon MacLaren: A School is Born 43 8 Adi Shankara 47 9 Shri Gurudeva – Swami Brahmananda Saraswati 51 10 Vedanta and Western Philosophy 57 11 Maharishi Mahesh Yogi: Flower Power – The Spirit of the Sixties 62 12 Swami Muktananda: Growing Roses in Concrete 70 13 Shantananda Saraswati 77 14 Dr Francis Roles: Return to the Source 81 15 Satsanga: Good Company 88 16 Joy Dillingham and Nicolai Rabeneck: Guarding the Light 95 17 Last Days 106 18 The Bridge 111 The Author 116 Appendix 1 – Words of the Wise 129 Appendix 2 – The Enneagram 140 Appendix 3 – Philosophy and Christianity 143 Notes 157 Bibliography 161 ~vii~ Photographs G.I. -
Shankaraachaarya: Life and Works
Shankaraachaarya: Life and Works Introduction1 thereafter, the couple was blessed with a wonderful son Let us offer our praNaams to Adi Shankara, one and they named him Shankara. According to historians, of the greatest philosophers, mystics, and poets to grace Shankara was born in the year Nandana (26th year of bhaaratavarshha and this planet. the sixty year cycle or sa.nvatsara) in the lunar month of Vaishaakha (corresponding to May/June) under the According to various historians, Adi Shankaracharya Zodiac sign of the Archer on Monday in the year 805 was born at a time when Buddhism held sway in India, AD.3 and the philosophy of Buddhism had come to be inter- preted as a denial of God. Hinduism was divided into Once Aryamba was shocked to find a large co- various sects and the ritualistic practice had taken a pre- bra coiled around the neck of Shankara. While she was dominance over actual philosophical practice. watching, it turned to a garland. It is said that Shankara could read, write, and speak Sanskrit at the age of one. Shankara, in his indisputable style, set out on a Once some children were arguing about the number of difficult mission and changed the outlook of the country seeds inside a melon. Young Shankara said that the and its people by revamping the vast hindu literature number of seeds inside that melon would correspond to into simple, easy to understand language. the number of gods who created the universe. When The life of Shankara the children cut open the melon, they found only one seed !! Once, Shankara was collecting alms from vari- Among numerous biographies of Shankara, the ous families in the village. -
Real and Imaginary Parts of Decidability-Making Gilbert Giacomoni
On the Origin of Abstraction : Real and Imaginary Parts of Decidability-Making Gilbert Giacomoni To cite this version: Gilbert Giacomoni. On the Origin of Abstraction : Real and Imaginary Parts of Decidability-Making. 11th World Congress of the International Federation of Scholarly Associations of Management (IF- SAM), Jun 2012, Limerick, Ireland. pp.145. hal-00750628 HAL Id: hal-00750628 https://hal-mines-paristech.archives-ouvertes.fr/hal-00750628 Submitted on 11 Nov 2012 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. On the Origin of Abstraction: Real and Imaginary Parts of Decidability-Making Gilbert Giacomoni Institut de Recherche en Gestion - Université Paris 12 (UPEC) 61 Avenue de Général de Gaulle 94010 Créteil [email protected] Centre de Gestion Scientifique – Chaire TMCI (FIMMM) - Mines ParisTech 60 Boulevard Saint-Michel 75006 Paris [email protected] Abstract: Firms seeking an original standpoint, in strategy or design, need to break with imitation and uniformity. They specifically attempt to understand the cognitive processes by which decision-makers manage to work, individually or collectively, through undecidable situations generated by equivalent possible choices and design innovatively. The behavioral tradition has largely anchored on Simon's early conception of bounded rationality, it is important to engage more explicitly cognitive approaches particularly ones that might link to the issue of identifying novel competitive positions. -
Advaita Vedanta – System of Philosophy Centred on Non Duality – Drawn from the Upanishads
ADVAITA PHILOSOPHY ADVAITA PHILOSOPHY 1. Where does it come from & how do we know about it? 2. What does it say? 3. What are its implications for everyday living? ABSTRACTED SUMMARY OF THE TALK CONTENT 0 February 2018 Indus Valley Ganges Valley 1. WHERE DOES IT COME FROM? 1 Vedas are the Source UPANISHADS - Eesha VEDAS - Kena - Katha - Rig-Veda - Taittireeya - Sama-Veda - Aitareya - Yajur-Veda - Mundaka - Atharva- - Mandukya Veda - Prashna - Brhadaranyaka - Chandogya ‘Vedanta’ 2 Terminology • Vedas - the works that contain the knowledge • Upanishads – chapters at the end (anta) of the Veda • Advaita Vedanta – system of Philosophy centred on non duality – drawn from the Upanishads • There are other closely linked Vedanta systems as well e.g. Yoga System of Patanjali 3 Historical Perspective 4 Organisation - Adi Shankara • Adi Shankara – 788 – 820 • Rediscovered the essence of Vedic Knowledge • Wrote commentaries & original works • Toured India • Reorganised swamis under 4 mathas – ‘seats’ – each led by a Shankaracharya 5 Locations of the 4 Mathas in the Shankaracharya Tradition Northern: Jyotirmath, Uttarakhand Western: Shankaracharya Dwarka, of the North seat Gurjarat moved here in Allahabad, Uttar Pradesh – Matha establish by Guru Deva Southern: Shringeri, Karnataka Eastern: Puri, Odisha 6 Some of the Prominent Indian Sages Who Came to the West 7 How This Knowledge Came to The West West East Indian Sages Popular Thinkers/ Leaders Writers/ Poets Scientists Cultural Academia Explorers 8 Dates for The Famous Scientists Who Were Influenced 9 One Example 10 One Western Philosopher – Schopenhauer was Particularly Moved He said: In the whole world there is no study so beneficial and so elevating as that of the Upanishads. -
STABLE STRUCTURES HOMOGENEOUS for a FINITE BINARY LANGUAGE T
Sh:157 ISRAEL JOURNAL OF MATHEMATICS,Vol. 49, Nos. 1-3, 1984 STABLE STRUCTURES HOMOGENEOUS FOR A FINITE BINARY LANGUAGE t BY ALISTAIR H. LACHLAN AND SAHARON SHELAH Dedicated to the memory of Abraham Robinson on the tenth anniversary of his death ABSTRACT Let L be a finite relational language and H(E) denote the class of all countable stable L-structures M for which Th(M) admits elimination of quantifiers. For M E H(L) define the rank of M to be the maximum value of CR(p, 2), where p is a complete l-type over Q and CR(p,2) is Shelah's complete rank. If L has only unary and binary relation symbols there is a uniform finite bound for the rank of M @ H(L). This theorem confirms part of a conjecture of the first author. Intuitively it says that for each L there is a finite bound on the complexity of the structures in H(L). 1. Introduction A first-order language will be called binary if all its nonlogical symbols are relation symbols which are either unary or binary. All languages considered are relational and finite. For any finite relational language L let H(L) denote the class of all countable stable L-structures M which are homogeneous for L in the sense of Fraiss6, i.e., any isomorphism between finite substructures of M extends to an automorphism of M. In this context to say that M is homogeneous is the same as saying that Th(M) admits elimination of quantifiers. There is a notion of rank which is useful in this context. -
The Ever Growing Banyan Tree
Chapter 2 Spirituality in India: The Ever Growing Banyan Tree Comparing Western and Indian knowledge, Rolland (1960, p. 91) described Western knowledge as the “science of facts” and spirituality as “the science of the soul, a peculiarly Indian science.” A major difference between philosophy and spirituality, or for that matter religion and spirituality, is that spirituality, as prac- ticed in India, has an action bias over and above cognitive (thinking or thoughts) or value (considering something important) concerns. Spirituality has been valued in the Indian culture from time immemorial, and it is no surprise that many innova- tions in the field of spirituality originated in India. Since people strive to excel in areas that are compatible with their cultural values, India has seen the emergence of many geniuses in the field of spirituality even in the modern times. I combine two qualitative methods, historical analysis and case analysis, to document how spirituality is valued in India, and much like a banyan tree, how it continues to grow even today. An examination of the life of the list of spiritual gurus presented in the chapter shows that they were all practitioners, and they practiced what they preached. Also, the case analysis shows that Ramakrishna was a practitioner, and both the Maharishi and Rajneesh recommended daily practice of meditation. A historical evolution of spirituality in India is traced by generating a list of spiritual gurus over the last 2,500 years by using published sources both in the West (Kroeber, 1944) and in India. Following this historical analysis, three case studies are presented to illustrate that spirituality is valued even today in India, and this culture continues to produce eminent spiritual gurus.