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Thinking Bear

Thoughts in maths and meditations in philosophy

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    • Thoughts on Physics, Maths and Reality (Part I)
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Recent Posts

  • On a Pet Hamster
  • K theory of finite fields (mod l homology)
  • Thoughts on Physics, Maths and Reality (Part II)
  • Serre-Swan Theorem and some K groups
  • A simple visual editor for creating commutative diagrams
  • Calculate (co)limits as (co)equalisers (two examples)
  • [Short Notes] Non-compactness of the closed unit ball in an infinite-dimensional Banach space
  • [Soft Question] Category theory and set theory: just a different language, or different foundation of mathematics?
  • Lusin’s Theorem and Continuous Extension
  • Krull’s Principal Ideal Theorem in Dimension Theory and Regularity

Archives

  • July 2021
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  • October 2020
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  • December 2019
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  • September 2016
  • August 2016

Categories

  • Algebra
    • Abstract Algebra
    • Commutative Algebra
  • Algebraic Geometry
  • Algebraic Topology
  • Category Theory
    • Topos Theory
  • Exercises
  • General Topology
  • Homotopy
    • Kerodon
    • Motivic homotopy
    • Simplicial stuffs
  • Latex tools
  • Mathematics
  • Others
  • Philosophy
  • Physics
    • Quantum Physics
  • Real Analysis

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