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  1. Normal subgroup and quotient subgroup

    Normal subgroup and quotient subgroup

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    5
  2. 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

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    1
  3. Plot Mcdonald Shape by function

    Plot Mcdonald Shape by function

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    5
  4. zero morphism and kernel and cokernel

    zero morphism and kernel and cokernel

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    1
  6. Cauchy's theorem for the abelian group, Sylow theorem for abelian group

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

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  8. Homomorphism of ring and ideal, quotient ring

    Homomorphism of ring and ideal, quotient ring

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    3
    7
  9. Polynomial ring over rationals

    Polynomial ring over rationals

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    4
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  12. Polynomial over a commutative ring

    Polynomial over a commutative ring

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    3
    7
  15. Show e really exists in one page

    Show e really exists in one page

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    5
    7
  16. Gaussian integer and Fermat theorem

    Gaussian integer and Fermat theorem

    34
    6
    8
  17. Ring theory lecture - definition

    Ring theory lecture - definition

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    2
    11
  18. Counting formula in Group theory

    Counting formula in Group theory

    35
    7
    15
  19. Permutation group (Symmetric group)

    Permutation group (Symmetric group)

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    1
    2
  20. Construction in categories: product/coproduct, equalizer/coequalizer, Pushout/pullbacks

    Construction in categories: product/coproduct, equalizer/coequalizer, Pushout/pullbacks

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    14
  22. Correspondence theorem in Group theory and third isomorphism theorem

    Correspondence theorem in Group theory and third isomorphism theorem

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    30
  23. How to put 20 equilateral triangles on sphere

    How to put 20 equilateral triangles on sphere

    25
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    17
  24. 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

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    2
    10
  25. 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

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    3
    180