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  1. Counting formula in Group theory

    Counting formula in Group theory

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

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

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  4. Correspondence theorem in Group theory and third isomorphism theorem

    Correspondence theorem in Group theory and third isomorphism theorem

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  5. How to put 20 equilateral triangles on sphere

    How to put 20 equilateral triangles on sphere

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

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

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  8. a_{n+2}=5a_{n+1}-6a_{n} Mathematical induction

    a_{n+2}=5a_{n+1}-6a_{n} Mathematical induction

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  9. Hermitian matrix is diagonalizable and orthonormal basis

    Hermitian matrix is diagonalizable and orthonormal basis

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  10. Special quartic equation and cos72

    Special quartic equation and cos72

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  11. More easy mathematical induction exercise

    More easy mathematical induction exercise

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  12. the field of quotients of an integral domain

    the field of quotients of an integral domain

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  13. Goldbach's theorem: Fermat numbers are coprime

    Goldbach's theorem: Fermat numbers are coprime

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  15. Field theory (Abstract Algebra)

    Field theory (Abstract Algebra)

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  16. Mathematical induction middle level exercise

    Mathematical induction middle level exercise

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  17. Linear map fixed point theorem

    Linear map fixed point theorem

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

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

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  22. introduce Weird complexity class, TFNP PPA, PPAD, PPP

    introduce Weird complexity class, TFNP PPA, PPAD, PPP

  23. Pseudo polynomial runtime in algorithm

    Pseudo polynomial runtime in algorithm

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  24. TML11: PSPACE Complete and Capture PSPACE #shorts

    TML11: PSPACE Complete and Capture PSPACE #shorts

  25. Cayley's theorem and its generalization

    Cayley's theorem and its generalization

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