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Mathematics
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Zhiwei's user avatar
Zhiwei's user avatar
Zhiwei
  • Member for 2 years, 8 months
  • Last seen this week
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Top posts
question
3
Prove $f\left(nx\right)\leq nf\left(x\right).$
Nov 29, 2023
question
2
If $a_1>1, a_{n+1} = 1+ \frac{a_n}{1+a_n}$, does $a_{n}$ converge?
Oct 14, 2023
answer
2
Invertibility of $A+cB$ for some $c\in \mathbb{R}$ if $A, B\in M_n(\mathbb{R})$ and $A+iB$ is invertible
Dec 13, 2023
question
1
Uniform convergence of a sequence of monotonic functions on closed intervals?
Nov 28, 2023
question
1
Exploring integration possibilities for a higher-order differential equation
Jan 19
question
0
Question about the solution of the polynomial $(x−1)(x−2)⋯(x−n)−1$ is irreducible in $\mathbb{Z}\left [ x \right ]$ for all $n≥1$
Jul 15, 2023
question
0
Maximum value of the subspace dimension of $GL_n (\mathbb{R})$
Nov 27, 2023
question
0
A probelm of constructing an orthogonal matrix and $n$ positive real numbers
Dec 7, 2023
question
0
Positive-definite matrix inequality $\begin{vmatrix} A & B\\ B^{\prime} & D \end{vmatrix} \leqslant\mid A\mid\mid D\mid $ [duplicate]
Dec 9, 2023
question
0
Could $\mathbb{N}$ form a 2-dimensional linear space over $\mathbb{Q}$?
Jan 6
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5
How to remove an unwanted line-like disruption with jagged edges in Plot3D?