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Factoring and decomposition, polynomial division, equation and inequality solving and reducing, visualizations of curves, surfaces, and regions...

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Checking whether Hessian matrix of a function is positive semidefinite on a hypercube

QUESTION FROM: Amir A. | 40 minutes ago BY: Gianluca Gorni
Mathematics , Algebra , Wolfram Language
3
REPLIES
110
VIEWS

About 3D plot and there are some strange white part

QUESTION FROM: lede li | 2 days ago BY: Gianluca Gorni
Mathematics , Algebra , Graphics and Visualization , ...
2
REPLIES
122
VIEWS

A numerical study of the zeros of the grand partition function of k-mers on strips of width k

CONTRIBUTED BY: Soumyadeep Sarma | 2 days ago BY: EDITORIAL BOARD
Staff Picks, Mathematics , Physics , Algebra , ...
1
REPLIES
238
VIEWS

Why doesn't Wolfram compute Ceiling[x] = 1 + Floor[x]?

QUESTION FROM: Sasha Mandra | 3 days ago BY: Michael Rogers
Mathematics , Algebra , Wolfram Language
16
REPLIES
453
VIEWS

Bohmian mechanics and the role of curvilinear coordinate systems

CONTRIBUTED BY: Klaus von Bloh | 3 days ago BY: EDITORIAL BOARD
Staff Picks, Mathematics , Physics , Algebra , ...
1
REPLIES
190
VIEWS

Compactness of the Q-curvature problem

CONTRIBUTED BY: Liuwei Gong | 14 days ago BY: EDITORIAL BOARD
Staff Picks, Mathematics , Algebra , Calculus , ...
1
REPLIES
263
VIEWS

Request resources for mathematical foundations of higher-order topological dynamics in networks

QUESTION FROM: Amin Cheikhi | 19 days ago BY: Daniel Lichtblau
Mathematics , Wolfram U , Algebra , Calculus , ...
3
REPLIES
454
VIEWS

A recursive method for partial Bell polynomials

CONTRIBUTED BY: J. M. | 21 days ago BY: EDITORIAL BOARD
Staff Picks, Mathematics , Algebra , Equation Solving , ...
1
REPLIES
274
VIEWS

Doom's fast inverse square root: legacy trick for vector normalization

CONTRIBUTED BY: Daniel Carvalho | 23 days ago BY: EDITORIAL BOARD
Staff Picks, Mathematics , Algebra , ...
1
REPLIES
303
VIEWS

Simple Egyptian hieroglyphs number conversion

CONTRIBUTED BY: Daniel Carvalho | 23 days ago BY: EDITORIAL BOARD
Staff Picks, Education , Mathematics , Algebra , ...
1
REPLIES
293
VIEWS

Finding pivots of a matrix with symbols

QUESTION FROM: Xiangyang Zhou | 25 days ago BY: Xiangyang Zhou
Mathematics , Algebra , Wolfram Language , ...
3
REPLIES
278
VIEWS

From spin foams to area metric dynamics to gravitons: Hessian, Regge calculus, hypercubical lattice

CONTRIBUTED BY: Bianca Dittrich | 25 days ago BY: EDITORIAL BOARD
Staff Picks, Astronomy , Mathematics , Physics , Algebra , ...
1
REPLIES
377
VIEWS

Square root of the square of a complex number

QUESTION FROM: Sasha Mandra | 1 month ago BY: Michael Rogers
Mathematics , Algebra , Wolfram Language , ...
8
REPLIES
424
VIEWS

How can I correct the following code to produce the expected result?

QUESTION FROM: Xu Xu | 1 month ago BY: Xu Xu
Mathematics , Physics , Algebra , Equation Solving , ...
8
REPLIES
584
VIEWS

Unexpected result in equation elimination from Wolfram Alpha

QUESTION FROM: Ron Hartikka | 1 month ago BY: Ron Hartikka
Mathematics , Wolfram|Alpha , Algebra , Equation Solving
2
REPLIES
532
VIEWS

Matrices tutorial: lists, columns, and rows in Wolfram

CONTRIBUTED BY: Roger J Brown | 1 month ago BY: Updating Name
Staff Picks, Education , Mathematics , Algebra , ...
2
REPLIES
962
VIEWS

[WSA24] Second harmonic generation in quantum dots

CONTRIBUTED BY: Khachik Khachatryan | 1 month ago BY: EDITORIAL BOARD
Staff Picks, Mathematics , Optics , Algebra , ...
1
REPLIES
709
VIEWS

The roots of a mathematical expression

QUESTION FROM: Yahely Levy | 1 month ago BY: Khayahsi Obasi
Mathematics , Wolfram|Alpha , Algebra , Equation Solving
6
REPLIES
771
VIEWS

Avoid singularity in TOV equations

QUESTION FROM: Sebastián Moreno Chalacá | 1 month ago
Mathematics , Physics , Algebra , Equation Solving , ...
0
REPLIES
290
VIEWS

Mathematica 14.2 is not performing matrix multiplication on 3 times 3 matrices.

QUESTION FROM: P. Marrone | 2 months ago BY: Hans Milton
Mathematics , Algebra , Wolfram Language
8
REPLIES
998
VIEWS
1
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Amir A.
1 day ago
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lede li
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Soumyadeep Sarma
2 days ago
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Klaus von Bloh
3 days ago
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Sasha Mandra
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Liuwei Gong
14 days ago
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J. M.
22 days ago

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