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4:41 AM
A new tag was created by Ongky Denny Wijaya.
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Q: Cannot prove $T_m(x,y)\leq T_m(x,z)$.

Ongky Denny WijayaGiven $$T_m(x,y)=\min(x,y),$$ for all $x,y\in[0,1]$. Prove if $y\leq z$ then $T_m(x,y)\leq T_m(x,z)$, for all $x,y,z\in[0,1]$. Given, \begin{align*} T_m(x,y)&=\min(x,y). \end{align*} For first cases $x\leq y$, \begin{align*} T_m(x,y)&=x. \end{align*} Give...

In mathematics, a t-norm (also T-norm or, unabbreviated, triangular norm) is a kind of binary operation used in the framework of probabilistic metric spaces and in multi-valued logic, specifically in fuzzy logic. A t-norm generalizes intersection in a lattice and conjunction in logic. The name triangular norm refers to the fact that in the framework of probabilistic metric spaces t-norms are used to generalize triangle inequality of ordinary metric spaces. == Definition == A t-norm is a function T: [0, 1] × [0, 1] → [0, 1] which satisfies the following properties: Commutativity: T(a, b) = T(b...
 
 
1 hour later…
5:54 AM
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Q: Prove $T\left(x,T(y,z)\right)=T(T(x,y),z)$

Ongky Denny WijayaGiven $$T_m(x,y)=\min(x,y),$$ for all $x,y\in[0,1]$. Prove $T_m\left(x,T_m(y,z)\right)=T_m(T_m(x,y),z)$. \begin{align*} T_m\left(x,T_m(y,z)\right)&=\min(x,T_m(y,z))\\ &=\min(x,\min(y,z)) \end{align*} Is it right the proof as below? \begin{align*} T_m\left(x,T_m(y,z)\right)&=\min(x,y,z)\\ &...

 
 
1 hour later…
7:02 AM
@MartinSleziak The tag now has two questions.
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Q: Confusion regrading Stokes' and Gauss Divergence Theorem while evaluating $\iint(\nabla \times F)\cdot dS$

Biswarup SahaSuppose, $F$ be a smooth vector field. Now, we want to evaluate $\iint(\nabla \times F)\cdot dS$ where $S=\{(x,y,z)|x^2+y^2+z^2=1,z\le0\}$ i.e. $S$ is lower half part of unit sphere. Now suppose we add the lower part on the $xy$-plane (which is $\{(x,y,z)|x^2+y^2\le1,z=0\}$$=S''$(say)) to S an...

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Q: An inconsistency between flux through surface and the divergence theorem

DavidThere was recently a question about a flux through a surface. The idea is to use the formula: $$\iint_S \mathbf F \cdot d\mathbf S,$$ with $\mathbf{F} = x \boldsymbol{\hat{\imath}}+ y \boldsymbol{\hat{\jmath}} - 2z \boldsymbol{\hat k}$ and $S$ is the semisphere with radius $a$ and $z≥0$. Si...

 
 
11 hours later…
6:12 PM
Right now, this question is the only question tagged and nothing else. The question is on its way to deletion (it has a number of downvotes, and no upvoted or accepted answer, so Roomba will grab it in a week or two).
Can we burninate the tag now? ;)
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A: Tag management 2020

Xander Henderson Proposal: Eliminate the tag transformation. The tag transformation is too broad—there are a large number of things in mathematics called "transformations" coming from diverse parts of mathematics, and tagging a question with this tag does nothing to refine or sort these different notions. I...

 
6:32 PM
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A: Tag management 2020

Xander Henderson Proposal: Eliminate the tag transformation. The tag transformation is too broad—there are a large number of things in mathematics called "transformations" coming from diverse parts of mathematics, and tagging a question with this tag does nothing to refine or sort these different notions. I...

 
6:58 PM
Well, hello, feeds!
 

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