List questions from reference-request

Published on 10 Apr 2026 - 10:23

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$0 < \frac{a}{b}, \frac{c}{d} < 1$, when do we have $\frac{a+c}{b+d} = \frac{a}{b} + \frac{c}{d}$?

Published on 17 Apr 2026 - 8:45

87

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Proof that an algebraic function is (almost) completely characterized by its divisor or principal parts

Published on 16 Apr 2026 - 7:01

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Prove, that $\vec{\phi }(t)=e^{\lambda_0t} \cdot \vec{x}_0 $ is a solution to the system $X'=AX$

Published on 15 Apr 2026 - 23:35

184

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Sum index in a Recursive Procedure Call in Maple

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Hitting time distribution of finite-state Markov chain

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Published on 13 Apr 2026 - 4:33

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Published on 14 Apr 2026 - 3:06

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A proof about period length

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257

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A quote by Halmos - where can I find it?

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What are common ways of "building" objects from "smaller" objects?

Published on 12 Apr 2026 - 8:34

134

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Existence of cut-off function in Riemannian manifold

Published on 16 Apr 2026 - 21:07

556

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Exceptional divisor of the blow-up of affine cone at the vertex

Published on 10 May 2026 - 19:25

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Function on distributions with a given property

Published on 10 Apr 2026 - 10:52

197

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Does integral of holomorphic function over boundary of "good" domain is always equal to zero?

Published on 12 Apr 2026 - 12:24

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Teaching early undergraduates how to read a math paper

$0 < \frac{a}{b}, \frac{c}{d} < 1$, when do we have $\frac{a+c}{b+d} = \frac{a}{b} + \frac{c}{d}$?

Proof that an algebraic function is (almost) completely characterized by its divisor or principal parts

Prove, that $\vec{\phi }(t)=e^{\lambda_0t} \cdot \vec{x}_0 $ is a solution to the system $X'=AX$

Sum index in a Recursive Procedure Call in Maple

Hitting time distribution of finite-state Markov chain

Higman’s Lemma for Matrices?

Lax-Milgram as a corollary of Stampacchia theorem [Brezis book]

A proof about period length

A quote by Halmos - where can I find it?

What are common ways of "building" objects from "smaller" objects?

Existence of cut-off function in Riemannian manifold

Exceptional divisor of the blow-up of affine cone at the vertex

Function on distributions with a given property

Does integral of holomorphic function over boundary of "good" domain is always equal to zero?

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