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1d
revised I have a convex hull with the facets in 3D. How do I compute the volume?
added 43 characters in body
1d
comment What are the ideals of the ring $\mathbb{Z}[x]/(2,x^3+1)$?
@shiyan, so that we can use the chinese remainder theorem.
1d
comment I have a convex hull with the facets in 3D. How do I compute the volume?
@ShekarMantha, see my edited answer. And no, the origin does not need to be inside the hull: the volume contributions outside the hull cancel. Try the analogous method for computing the area of a polygon in 2d.
1d
revised I have a convex hull with the facets in 3D. How do I compute the volume?
added 210 characters in body
1d
revised Basic Complex Analysis Question: simplification of $e^{2\pi i\left(17-\frac{1}{3}\right)}$
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1d
answered I have a convex hull with the facets in 3D. How do I compute the volume?
1d
answered What can be said about the relationship between the complex numbers $\lvert z\rvert^n$ and $\lvert z^n\rvert$?
1d
answered What are the ideals of the ring $\mathbb{Z}[x]/(2,x^3+1)$?
1d
answered About Taylor series
1d
comment Computing $[\mathbb Q(\sqrt[4] 2):\mathbb Q(\sqrt2)]$
The order of fields in the degrees is reversed.
1d
answered Let $S = \{n\in\mathbb{N}\mid 133 \text{ divides } 3^n + 1\}$. Find three elements of S.
1d
answered P.I.D. and a nontrivial ideal, Quotient ring has finitely many ideals
2d
revised What is product of $1!\cdot2!\cdot 3!\cdot…\cdot n!$
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2d
answered What is product of $1!\cdot2!\cdot 3!\cdot…\cdot n!$
2d
comment Invertible matrices modulo $29$.
Try considering $LU$ decomposition.
Feb
11
revised On the relationship between $\phi(n)$ and $\sigma( n)$
added 51 characters in body
Feb
11
revised On the relationship between $\phi(n)$ and $\sigma( n)$
edited body
Feb
11
answered On the relationship between $\phi(n)$ and $\sigma( n)$
Feb
10
answered Prove that the four roots of unity form an abelian multiplicative group
Feb
9
comment Disjoint cycle Decomposition.
Do it first for $\sigma=(123456)$.