List questions from semialgebraic-geometry

Published on 25 Mar 2026 - 4:44

60

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When is a set $\{\mathbf x\in\Bbb R^n\mid p(\mathbf x)\le 0\}$ convex?

Published on 01 May 2026 - 2:25

100

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Sufficient conditions on a semialgebraic set for being a manifold

Published on 01 Jun 2020 - 13:34

86

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Zero set of nested radicals

Published on 05 Apr 2026 - 23:00

2.7k

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How to plot the PSD cone in MATLAB

Published on 06 May 2026 - 14:30

121

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Structures strictly between $\{\mathbb{R},+,<\}$ and $\{\mathbb{R},+,\cdot,<\}$.

Published on 26 Mar 2026 - 1:27

1.1k

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What is the volume of the $3$-dimensional elliptope?

Published on 04 May 2026 - 10:33

423

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Is the set $S = \{x \in [0, \infty)^2 \mid x_1 x_2^2 \leq 1\}$ convex?

Published on 10 May 2026 - 13:50

107

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Finding extrema of sublevel set of the Hénon-Heiles potential function

Published on 25 Mar 2026 - 23:37

46

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Does there exist some o-minimal structure such that a given strictly monotonic function $\mathbb{R} \to \mathbb{R}$ is definable?

Published on 26 Mar 2026 - 1:28

45

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Finding the image of a semialgebraic set under a linear projection

Published on 25 Mar 2026 - 23:37

37

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Finding the closest positive definite matrix

Published on 26 Mar 2026 - 0:59

57

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Terminology for Complex Algebraic Geometry with Complex Conjugation

Published on 26 Mar 2026 - 1:00

84

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Is a subgroup of $\operatorname{GL}(n,\mathbb{R})$ semialgebraic if and only if all its orbits are?

Published on 26 Mar 2026 - 1:25

88

Views

Methods to compute volume of a semi-algebraic region

Published on 24 Apr 2026 - 0:13

List Question

Is the exponential function semi-algebraic?

When is a set $\{\mathbf x\in\Bbb R^n\mid p(\mathbf x)\le 0\}$ convex?

Sufficient conditions on a semialgebraic set for being a manifold

Zero set of nested radicals

How to plot the PSD cone in MATLAB

Structures strictly between $\{\mathbb{R},+,<\}$ and $\{\mathbb{R},+,\cdot,<\}$.

What is the volume of the $3$-dimensional elliptope?

Is the set $S = \{x \in [0, \infty)^2 \mid x_1 x_2^2 \leq 1\}$ convex?

Finding extrema of sublevel set of the Hénon-Heiles potential function

Does there exist some o-minimal structure such that a given strictly monotonic function $\mathbb{R} \to \mathbb{R}$ is definable?

Finding the image of a semialgebraic set under a linear projection

Finding the closest positive definite matrix

Terminology for Complex Algebraic Geometry with Complex Conjugation

Is a subgroup of $\operatorname{GL}(n,\mathbb{R})$ semialgebraic if and only if all its orbits are?

Methods to compute volume of a semi-algebraic region

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