Keeping busy with Sudoku, Wordle, Crosswords, and mining textbooks for statements to practice proving in #Metamath ...

Inspired by this video playlist on #RealAnalysis #Math

https://www.youtube.com/playlist?list=PLYPU-RArkLZNwMZ55-y8FZZEeY7zCJX59

Which was created from https://www.jirka.org/ra/ _Basic Analysis:
Introduction to Real Analysis_ by Jiří Lebl. #JiříLebl a #CreativeCommons (4.0) free #math #textbook

In Metamath's compressed format, my proofs of strong induction over the natural numbers took 316 bytes, well-ordering of the natural numbers: 376 bytes, 2ⁿ⁻¹ ≤ n! : 1204 bytes, formula for finite sum of geometric series: 2566 bytes. The last has 147 steps, some of which are reused and some of which depend on up to 8 prior steps and on a truncated library of 30477 statements of syntax, axioms, definitions, and theorems from the wider world of Metamath.

The #MathReviews math review of my latest joint paper 🐘 in analysis has appeared! 📙
link for subscribers=
https://mathscinet.ams.org/mathscinet/article?mr=4929931
#RealAnalysis #PDE #PurdueFortWayne

A FORGOTTEN EPISODE in French-occupied Naples in the years around 1800—just after the French Revolution—illustrates why it makes sense to see mathematics and politics as entangled. The protagonists of this story were gravely concerned about how mainstream mathematical methods were transforming their world—somewhat akin to our current-day concerns about how digital algorithms are transforming ours. But a key difference was their straightforward moral and political reading of those mathematical methods. By contrast, in our own era we seem to think that mathematics offers entirely neutral tools for ordering and reordering the world—we have, in other words, forgotten something that was obvious to them.

In this essay, I’ll use the case of revolutionary Naples to argue that the rise of a new and allegedly neutral mathematics—characterized by rigor and voluntary restriction—was a mathematical response to pressing political problems. Specifically, it was a response to the question of how to stabilize social order after the turbulence of the French Revolution. Mathematics, I argue, provided the logical infrastructure for the return to order. This episode, then, shows how and why mathematical concepts and methods are anything but timeless or neutral; they define what “reason” is, and what it is not, and thus the concrete possibilities of political action. The technical and political are two sides of the same coin—and changes in notions like mathematical rigor, provability, and necessity simultaneously constitute changes in our political imagination.

#Mathematics #Math #Analysis #MassimoMazzotti #LAReviewOfBooks #Epistemology #Revolution #RealAnalysis #HistoryOfMath #HistoryOfMathematics

https://lareviewofbooks.org/article/foundational-anxieties-modern-mathematics-and-the-political-imagination/

Foundational Anxieties, Modern Mathematics, and the Political Imagination | Los Angeles Review of Books

Massimo Mazzotti uses a forgotten episode in revolutionary Naples to demonstrate the entanglement of mathematics and politics.

Los Angeles Review of Books
Lecture 22: Fundamental Theorem of Calculus, Integration by Parts, and Change of Variable Formula

YouTube
Lecture 21: The Riemann Integral of a Continuous Function

YouTube
Lecture 20: Taylor's Theorem and the Definition of Riemann Sums

YouTube
Lecture 19: Differentiation Rules, Rolle's Theorem, and the Mean Value Theorem

YouTube
Lecture 18: Weierstrass's Example of a Continuous and Nowhere Differentiable Function

YouTube
Lecture 17: Uniform Continuity and the Definition of the Derivative

YouTube
Lecture 16: The Min/Max Theorem and Bolzano's Intermediate Value Theorem

YouTube