2. Cauchy's theorem for the abelian group, Sylow theorem for abelian group

    Cauchy's theorem for the abelian group, Sylow theorem for abelian group

    22
    5
    6
  4. Homomorphism of ring and ideal, quotient ring

    Homomorphism of ring and ideal, quotient ring

    20
    3
    7
  6. Polynomial ring over rationals

    Polynomial ring over rationals

    21
    4
    5
  9. Polynomial over a commutative ring

    Polynomial over a commutative ring

    23
    3
    7
  10. Prove Method of infinite Descent (Vieta's jumping) : (x^2+y^2+1)/xy=3

    Prove Method of infinite Descent (Vieta's jumping) : (x^2+y^2+1)/xy=3

    56
    4
    9
  11. How to put 20 equilateral triangles on sphere

    How to put 20 equilateral triangles on sphere

    25
    4
    17
  12. Integral of e^ax cos(bx) and Integral of e^ax sin(bx) no integration by part

    Integral of e^ax cos(bx) and Integral of e^ax sin(bx) no integration by part

    22
    3
    17
  14. Show e really exists in one page

    Show e really exists in one page

    21
    5
    7
  15. Mathematical induction middle level exercise

    Mathematical induction middle level exercise

    21
    5
    4
  16. Hermitian matrix is diagonalizable and orthonormal basis

    Hermitian matrix is diagonalizable and orthonormal basis

    31
    6
    21
  17. Field theory (Abstract Algebra)

    Field theory (Abstract Algebra)

    22
    4
    59
  18. Goldbach's theorem: Fermat numbers are coprime

    Goldbach's theorem: Fermat numbers are coprime

    38
    5
    12
  19. Correspondence theorem in Group theory and third isomorphism theorem

    Correspondence theorem in Group theory and third isomorphism theorem

    22
    3
    26
  20. the field of quotients of an integral domain

    the field of quotients of an integral domain

    35
    6
    16
  23. Linear algebra advanced basic: Zorn's lemma, exchange lemma, dimension

    Linear algebra advanced basic: Zorn's lemma, exchange lemma, dimension

    29
    6
    57
  24. Ring theory lecture - definition

    Ring theory lecture - definition

    19
    2
    11
  25. Counting formula in Group theory

    Counting formula in Group theory

    35
    7
    15