Question

On solution to the equation $x_{1}^{2}x_{2}^{2}x_{3}^{2}x_{4}^{2}x_{5}^{2}\left(\sum_{i=1}^{6}a_{i}x_{i}\right)^{2}=1$

score 119 · Answer 1 · 2026-03-25 04:42:35

119

Views

On solution to the equation $x_{1}^{2}x_{2}^{2}x_{3}^{2}x_{4}^{2}x_{5}^{2}\left(\sum_{i=1}^{6}a_{i}x_{i}\right)^{2}=1$

Published on 25 Mar 2026 - 4:42

score 57 · Answer 2 · 2026-03-25 04:42:34

57

Views

Extension of smooth functions on a locally closed subset of $\mathbb R^n$ to the whole space

Published on 25 Mar 2026 - 4:42

score 63 · Answer 3 · 2026-03-25 03:02:31

63

Views

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score 88 · Answer 4 · 2026-03-27 15:41:02

88

Views

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score 91 · Answer 5 · 2026-03-25 04:36:40

91

Views

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score 323 · Answer 6 · 2026-03-25 04:43:29

323

Views

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score 266 · Answer 7 · 2026-03-27 10:05:49

266

Views

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score 100 · Answer 8 · 2026-03-25 04:39:37

100

Views

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score 239 · Answer 9 · 2026-04-10 23:10:42

239

Views

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score 1.8k · Answer 10 · 2026-03-27 08:32:19

1.8k

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score 47 · Answer 11 · 2026-03-25 03:03:44

47

Views

Is $F(x_1,x_2,\dots,x_n)$ where $(x_1,x_2,\dots,x_n)\in \Delta$,a semi-algebraic function?

Published on 25 Mar 2026 - 3:03

score 121 · Answer 12 · 2026-03-25 03:03:49

121

Views

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Published on 25 Mar 2026 - 3:03

score 88 · Answer 13 · 2026-03-25 02:57:34

88

Views

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Published on 25 Mar 2026 - 2:57

score 113 · Answer 14 · 2026-04-23 22:21:12

113

Views

Show that every nonnegative polynomial $P \in \mathbb R [x]$ can be written as a sum of squares of real polynomials

Published on 23 Apr 2026 - 22:21

score 120 · Answer 15 · 2026-04-10 22:55:42

120

Views

Homology in real closed fields

Published on 10 Apr 2026 - 22:55

List Question

On solution to the equation $x_{1}^{2}x_{2}^{2}x_{3}^{2}x_{4}^{2}x_{5}^{2}\left(\sum_{i=1}^{6}a_{i}x_{i}\right)^{2}=1$

Extension of smooth functions on a locally closed subset of $\mathbb R^n$ to the whole space

Proving an inequality based on the discriminant of a cubic polynomial

General hyperplane sections of real varieties

Convex subsets of semialgebraic sets

How do I most efficiently find the perpendicular distance from a point to the convex hull of a collection of circles?

Invertibility of a Polynomial map.

Determining equality of sets defined by polynomial inequalities in several variables

Double roots of polynomials

The maximum volume of Tetrahedron

Is $F(x_1,x_2,\dots,x_n)$ where $(x_1,x_2,\dots,x_n)\in \Delta$,a semi-algebraic function?

Sensitivity of polynomial global minimizers with respect to perturbations in the coefficients.

Algebraic function $u\in C^\infty(\Bbb R^n)$

Show that every nonnegative polynomial $P \in \mathbb R [x]$ can be written as a sum of squares of real polynomials

Homology in real closed fields

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