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  1. Show e really exists in one page

    Show e really exists in one page

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    7
  2. Gaussian integer and Fermat theorem

    Gaussian integer and Fermat theorem

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    8
  3. Ring theory lecture - definition

    Ring theory lecture - definition

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  4. Counting formula in Group theory

    Counting formula in Group theory

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    15
  5. Permutation group (Symmetric group)

    Permutation group (Symmetric group)

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

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

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  8. Correspondence theorem in Group theory and third isomorphism theorem

    Correspondence theorem in Group theory and third isomorphism theorem

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  9. How to put 20 equilateral triangles on sphere

    How to put 20 equilateral triangles on sphere

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  10. Integral of 1/(x^3-1) from integral of 1/(x^3+1)

    Integral of 1/(x^3-1) from integral of 1/(x^3+1)

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  11. Integral of 1/(x^2+1) by using complex number

    Integral of 1/(x^2+1) by using complex number

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    30
  12. integral of lnx ln(1-x) from 0 to 1

    integral of lnx ln(1-x) from 0 to 1

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  13. Cayley's theorem and its generalization

    Cayley's theorem and its generalization

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  14. Group homomorphism and first group isomorphism theorem

    Group homomorphism and first group isomorphism theorem

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  15. Hermitian matrix is diagonalizable and orthonormal basis

    Hermitian matrix is diagonalizable and orthonormal basis

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  16. 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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  18. Inner product space and p norm

    Inner product space and p norm

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    3
  19. 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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  20. sin(x+y)sin(x-y)=(sinx+siny)(sinx-siny)

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

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  22. Mathematical induction exercise: 6^n-1 is divisible by 5

    Mathematical induction exercise: 6^n-1 is divisible by 5

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  23. Cantor's intersection theorem Prove

    Cantor's intersection theorem Prove

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    2
  24. Prove normal matrix is unitary diagonalizable

    Prove normal matrix is unitary diagonalizable

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  25. Volume of sphere, Cone, Pyramid

    Volume of sphere, Cone, Pyramid

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