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15
Math.TechQA.Club
2026-04-14 21:17:49
362
Views
Second directional derivative and Hessian matrix: a clarification on the proof
Published on
14 Apr 2026 - 21:17
#functional-analysis
#analysis
#functions
#derivatives
#hessian-matrix
30
Views
Show that $S=\operatorname{span}\{v^{(i,j)},\;1\leq i\neq j\leq n\}.$
Published on
16 Apr 2026 - 4:13
#real-analysis
#analysis
#limsup-and-liminf
151
Views
Continuous Mapping Theorem with Restricted Continuity
Published on
12 Apr 2026 - 15:17
#probability
#general-topology
#analysis
#probability-theory
331
Views
Baby Rudin's Proof in Theorem 2.8
Published on
14 Apr 2026 - 0:26
#real-analysis
#analysis
#elementary-set-theory
58
Views
$F(nc)=0$ then $F=0$
Published on
16 Apr 2026 - 11:46
#real-analysis
#analysis
#lebesgue-integral
405
Views
Asymptotic behaviour of the solution of a PDE
Published on
14 Apr 2026 - 3:50
#real-analysis
#analysis
#limits
#partial-differential-equations
#asymptotics
167
Views
Continuous dependence on initial data
Published on
22 Apr 2026 - 5:38
#ordinary-differential-equations
#analysis
#numerical-methods
48
Views
Is this function continuous and differentiable at $x=0$?
Published on
12 Apr 2026 - 2:03
#analysis
#derivatives
1.3k
Views
Existence and uniqueness of 2nd order linear differential equations
Published on
15 Apr 2026 - 17:52
#real-analysis
#complex-analysis
#ordinary-differential-equations
#analysis
47
Views
Limit involving logarithms and exponentials
Published on
13 Apr 2026 - 0:47
#limits
#analysis
150
Views
Show that:$\sum_{i=1}^n x_{i} \cdot \sum_{i=1}^n \frac{1}{x_{i}} \geq n^2 $
Published on
16 Apr 2026 - 6:44
#analysis
#proof-verification
#inequality
#induction
65
Views
Problem in finding the Euclidean measure of a set in $\mathbb{R^3}$
Published on
11 Apr 2026 - 14:23
#real-analysis
#analysis
#measure-theory
#lebesgue-measure
#path-connected
141
Views
Prob. 5 (b), Sec. 4.3, in Bartle & Sherbert's INTRO TO REAL ANALYSIS: Rigorous Proof of a Limit Statement
Published on
17 Apr 2026 - 14:30
#calculus
#real-analysis
#limits
#analysis
#proof-verification
85
Views
existence and uniqueness of the solution of a PDE
Published on
14 Apr 2026 - 18:43
#real-analysis
#analysis
#partial-differential-equations
725
Views
Prob. 5 (e), Sec. 4.3, in Bartle & Sherbert's INTRO TO REAL ANALYSIS: How to find $\lim_{x\to 0-} \frac{\sqrt{x+1}}{x}$?
Published on
15 Apr 2026 - 8:22
#calculus
#real-analysis
#limits
#analysis
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