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  1. Homomorphism of ring and ideal, quotient ring

    Homomorphism of ring and ideal, quotient ring

    20
    3
    7
  2. How to put 20 equilateral triangles on sphere

    How to put 20 equilateral triangles on sphere

    25
    4
    17
  3. Prove Method of infinite Descent : square k is irrational if k is not square free

    Prove Method of infinite Descent : square k is irrational if k is not square free

    14
    4
    3
  5. Correspondence theorem in Group theory and third isomorphism theorem

    Correspondence theorem in Group theory and third isomorphism theorem

    22
    3
    30
  6. sinx+sin2x+sin3x+...+sin nx, cosx+cos2x+cos3x+cos 4 x+...+cos nx

    sinx+sin2x+sin3x+...+sin nx, cosx+cos2x+cos3x+cos 4 x+...+cos nx

    16
    2
    11
  7. Polynomial ring over rationals

    Polynomial ring over rationals

    21
    4
    5
  9. 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
  10. There exist distinct integers x,y,z for which, x^2+y^2+z^2=14^n

    There exist distinct integers x,y,z for which, x^2+y^2+z^2=14^n

    21
    4
    1
  11. The existence proof of eigenvectors and eigenvalues

    The existence proof of eigenvectors and eigenvalues

    9
    2
    4
  12. Ring theory lecture - definition

    Ring theory lecture - definition

    19
    2
    11
  13. zero morphism and kernel and cokernel

    zero morphism and kernel and cokernel

    12
    1
    1
  14. Plot Mcdonald Shape by function

    Plot Mcdonald Shape by function

    19
    5
  15. Prove Method of infinite Descent (Vieta's jumping) : (4a^2-1)^2/(4ab-1) is integer, then a=b

    Prove Method of infinite Descent (Vieta's jumping) : (4a^2-1)^2/(4ab-1) is integer, then a=b

    21
    4
  16. Cayley's theorem and its generalization

    Cayley's theorem and its generalization

    1
  18. Group homomorphism and first group isomorphism theorem

    Group homomorphism and first group isomorphism theorem

    2
  19. Normal subgroup and quotient subgroup

    Normal subgroup and quotient subgroup

    20
    5
  20. Trigonometric/trig graphs

    Trigonometric/trig graphs

    4
    1
    4
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