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In Loomis and Sternberg's Advanced Calculus section 3.3 Continuity, they make this comment (just before Theorem 3.2, [pp. 128-129 in my copy):
A linear map $T : V \rightarrow W$ is bounded below by $b$ if $\|T(\xi)\| \geq b \|\xi\|$ for all $\xi$ in $V$ [...] If $V$ is finite-dimensional, the...5
The standard simplices $\Delta^n \subset \{\mathbf{x}\in\mathbb{R}^{n+1}\mid x_0 + \ldots + x_n =1 \} =: \mathbb{A}^n$ carry two natural sorts of smooth differential forms:
Those differential forms on the interior of $\Delta^n$ that extend smoothly to a neighbourhood of $\Delta^n$ in $\mathbb{...
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Among the papers indexed by MathSciNet and Zentralblatt MATH,
I occasionally have seen papers which consist essentially only
of text copied from elsewhere without proper attribution and without
adding any significant value. I would be interested whether anyone
has an idea what the frequency of su...
132
How could a free (i.e. free content) alternative for MathSciNet and Zentralblatt be created?
Comments
Some mathematicians have stopped writing reviews for MathSciNet because they feel their output should be freely available. (The Pricing for MathSciNet is not high, but it is not the point....
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