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Math Stack Exchange @StackMath

A Q&A site for people studying math at any level and professionals in related fields

Joined January 2011
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Bounty offered: A step in the completeness proof of first-order logic math.stackexchange.com/q/388… #logic

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Bounty offered: An alternate infinite series for Gaussian function - proof math.stackexchange.com/q/463… #sequencesandseries
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Showing that prime factors of a number is congruent to $1 \pmod 5$ math.stackexchange.com/q/463… #elementarynumbertheory
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Can you answer this? Can I go from the LU factorization of a symmetric matrix to its Cholesky ... math.stackexchange.com/q/139… #linearalgebra
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Bounty offered: Intersections of a ray from star domain to its boundary math.stackexchange.com/q/173… #generaltopology

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Bounty offered: Bounds on $\max_i p_i$ in terms of $\sum_i p_i^2$ math.stackexchange.com/q/463… #linearalgebra
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Bounty offered: Asymptotic stability implies the existence of a strong Lyapuno... math.stackexchange.com/q/462… #ordinarydifferentialequations
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How to distinguish between isomorphic and homotopic chain complexes? math.stackexchange.com/q/463… #homologycohomology
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Find n given that $\lim\limits_{x\rightarrow0} \frac{1-\sqrt{\cos2x}.\sqrt[3]{\cos3x}.\sqrt[4]{\cos4... math.stackexchange.com/q/463… #limits
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Bounty offered: Conjecture about difference of Fibonacci numbers and primes math.stackexchange.com/q/463… #numbertheory
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Great answer: Is there any way to find the number of real roots of a polynomial computationally? math.stackexchange.com/a/463… #polynomials
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Qualifying exam problem (complex analysis) math.stackexchange.com/q/463… #complexanalysis
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number of distinct commutators and the cardinality of the center of a group math.stackexchange.com/q/463… #abstractalgebra
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Bounty offered: Homotopy Types of Fibrations in Postnikov Tower encoded by Classifing map math.stackexchange.com/q/463… #algebraictopology
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Can you answer this? Is $5^x x$ ever prime? math.stackexchange.com/q/463… #numbertheory
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Bounty offered: Examples of random variables with discrete distribution math.stackexchange.com/q/463… #probability
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Solving for x in logarithmic equation $\log_4(2x) = \frac{1}{2}x^2 - 1$ math.stackexchange.com/q/463… #algebraprecalculus
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Bounty offered: Which number is greater A or B? math.stackexchange.com/q/462… #inequality
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Proving that ${(1-\frac{2}{x^2})}^x < \frac{x-1}{x 1}$ for any $x > 2$. math.stackexchange.com/q/463… #limits
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Can you answer this? Factorize: $a^3(b c) b^3(a c) c^3(a b)$. math.stackexchange.com/q/138… #factoring
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