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  1. Homomorphism of ring and ideal, quotient ring

    Homomorphism of ring and ideal, quotient ring

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  4. Show e really exists in one page

    Show e really exists in one page

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    7
  5. Gaussian integer and Fermat theorem

    Gaussian integer and Fermat theorem

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    8
  6. Ring theory lecture - definition

    Ring theory lecture - definition

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    2
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  7. Counting formula in Group theory

    Counting formula in Group theory

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  8. Permutation group (Symmetric group)

    Permutation group (Symmetric group)

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

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

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    4
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  11. Correspondence theorem in Group theory and third isomorphism theorem

    Correspondence theorem in Group theory and third isomorphism theorem

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  12. How to put 20 equilateral triangles on sphere

    How to put 20 equilateral triangles on sphere

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  13. The existence proof of eigenvectors and eigenvalues

    The existence proof of eigenvectors and eigenvalues

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    3
  14. Integral of 1/(1+x^2)^2 (substitution)

    Integral of 1/(1+x^2)^2 (substitution)

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    3
    1
  15. 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

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  16. Prove Method of infinite Descent (Vieta's jumping) : (a^2+b^2)/(ab+1) is square, imo1988

    Prove Method of infinite Descent (Vieta's jumping) : (a^2+b^2)/(ab+1) is square, imo1988

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    4
  17. zero morphism and kernel and cokernel

    zero morphism and kernel and cokernel

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  18. Integral of 1/(e^x+1) and integral of 1/(e^x-1)

    Integral of 1/(e^x+1) and integral of 1/(e^x-1)

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    3
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  19. Solve the given equation | Solve 3x^2+4x-15=0 by factorization method | @eduk5 | Quadratic equation

    Solve the given equation | Solve 3x^2+4x-15=0 by factorization method | @eduk5 | Quadratic equation

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  21. Inner product space and p norm

    Inner product space and p norm

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    3
  22. Probability solution: A Total of n balls, number of 1 through n...

    Probability solution: A Total of n balls, number of 1 through n...

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  23. Prove normal matrix is unitary diagonalizable

    Prove normal matrix is unitary diagonalizable

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  24. sin(x+y)sin(x-y)=(sinx+siny)(sinx-siny)

    sin(x+y)sin(x-y)=(sinx+siny)(sinx-siny)

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  25. Using Numpy's Polynomial Functionality

    Using Numpy's Polynomial Functionality

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