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

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

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  2. integral of x^n lnx from 0 to 1

    integral of x^n lnx from 0 to 1

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  3. Proper colorings and the chromatic number of graphs | graph theory | elementary level

    Proper colorings and the chromatic number of graphs | graph theory | elementary level

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  4. Fractional colorings and the fractional chromatic number of graphs | graph theory | advanced level

    Fractional colorings and the fractional chromatic number of graphs | graph theory | advanced level

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  5. The chromatic number of a graph and min degrees of its subgraphs | graph theory | intermediate level

    The chromatic number of a graph and min degrees of its subgraphs | graph theory | intermediate level

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  6. Can you prove this: square root of 2 of 2= square root of 2 to the power square root of 2

    Can you prove this: square root of 2 of 2= square root of 2 to the power square root of 2

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  7. Integral of 1/sqrt{x^2+1}, Integral of 1/sqrt{x^2-1}, Integral of 1/sqrt{1-x^2}

    Integral of 1/sqrt{x^2+1}, Integral of 1/sqrt{x^2-1}, Integral of 1/sqrt{1-x^2}

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  8. the field of quotients of an integral domain

    the field of quotients of an integral domain

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  9. Can you solve the following integral? integral of 1/(1+x^phi)^phi from 0 to infty

    Can you solve the following integral? integral of 1/(1+x^phi)^phi from 0 to infty

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  10. The incorrect proof of the Dirac's theorem about Hamiltonian graphs on ProofWiki

    The incorrect proof of the Dirac's theorem about Hamiltonian graphs on ProofWiki

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  11. Upper bound on chromatic number of graph in terms of number of edges | graph theory | elementary

    Upper bound on chromatic number of graph in terms of number of edges | graph theory | elementary

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  12. More easy mathematical induction exercise

    More easy mathematical induction exercise

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  13. Trigonometry: Product of sin(kpi/n) from k=1 to n-1

    Trigonometry: Product of sin(kpi/n) from k=1 to n-1

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

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

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

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

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  17. Field theory (Abstract Algebra)

    Field theory (Abstract Algebra)

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  18. Complex contour integral: e^{-x}cos(x)/sqrt(x), e^{-x}sin(x)/sqrt(x) from 0 to infinity

    Complex contour integral: e^{-x}cos(x)/sqrt(x), e^{-x}sin(x)/sqrt(x) from 0 to infinity

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  19. Two ways: Integral of 1/(x^2+1)^2 from 0 to infinity

    Two ways: Integral of 1/(x^2+1)^2 from 0 to infinity

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  20. integral of t^{z-1}/(e^z-1) from 0 to infinity

    integral of t^{z-1}/(e^z-1) from 0 to infinity

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  23. Prove Fermat last theorem n=4

    Prove Fermat last theorem n=4

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  24. Find eigenvalues of matrix with all same element

    Find eigenvalues of matrix with all same element

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  25. sum of the reciprocals of the primes is divergent

    sum of the reciprocals of the primes is divergent

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