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• • akrishna168
  • 23 May 2025
    • created 23 May 2025 07:14
    • updated 23 May 2025 19:47

  Nonexistence of immersions

• • User 2473
  • 21 May 2025

  My judgement of those viral PEMDAS problems

• • Chun Ding
  • 20 May 2025
    • created 20 May 2025 22:59
    • updated 23 May 2025 06:46
  • 1 category
    • Theorem Proving in Lean 4

  Section 4 Solutions – Theorem Proving in Lean 4

• • Chun Ding
  • 20 May 2025
    • created 20 May 2025 07:10
    • updated 20 May 2025 22:28
  • 1 category
    • Theorem Proving in Lean 4

  Section 3 Solutions – Theorem Proving in Lean 4

• • User 2473
  • 6 May 2025

  Two rules, same function; two functions, same rule

• • Johan Buret
  • 28 Apr 2025
    • created 28 Apr 2025 22:00
    • updated 1 May 2025 13:05
  • 2 categories
    • Linear Algebra
    • français

  Algèbre linéaire : Parlons de matrice d’expression, au lieu de matrice de passage

• • iMathTutor®
  • 22 Jan 2025
    • created 22 Jan 2025 23:26
    • updated 23 Jan 2025 19:21
  • 2 categories
    • Elementary Number Theory
    • Discrete Mathematics

  An Elementary Number Theory Problem

• • basketballguy
  • 7 Nov 2024
    • created 7 Nov 2024 12:36
    • updated 8 Nov 2024 00:22
  • 2 categories
    • Physics
    • Quantum Mechanics

  Quantum Mechanics: An Introduction

• • Tucker Q
  • 11 May 2024
    • created 11 May 2024 21:29
    • updated 13 May 2024 01:05

  Abelianization Volley #1 - Universal Arrows

• • Words. And some formulas.
  • 11 Mar 2024
    • created 11 Mar 2024 17:54
    • updated 27 Sep 2024 18:46
  • 1 category
    • Mathematics

  A geometrical explanation of the determinant formula for matrices