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For questions in Mathematics Education as a scientific discipline. For more hands-on questions on teaching Mathematics, please use the tag teaching. There is also a Stack Exchange community http://matheducators.stackexchange.com/

4 votes

Amount of mathematical knowledge required for starting Ph.D. in pure mathematics

American students are generally not ready to start PhD because of mediocre undergraduate education. This is not really a complain about the US education (which I think is great), but because most of t …
Piotr Hajlasz's user avatar
3 votes

One-step problems in geometry

The Tarski Plank Problem: Unit disc can be covered by $n$-rectangles $1\times n^{-1}$. Prove that it cannot be covered by a smaller number of such rectangles. Solutions. Take the unit sphere of the …
Piotr Hajlasz's user avatar
93 votes
Accepted

Why isn't integral defined as the area under the graph of function?

Actually, in the following book the Lebesgue integral is defined the way you suggested: Pugh, C. C. Real mathematical analysis. Second edition. Undergraduate Texts in Mathematics. Springer, Cham, 2 …
Piotr Hajlasz's user avatar
11 votes

Which edition of Philosophiae Naturalis Principia Mathematica of Isaac Newton would you reco...

I would recommend this 1999 version by Cohen & Whitman: The Principia: The Authoritative Translation and Guide: Mathematical Principles of Natural Philosophy This edition has comments that help you …
Community's user avatar
  • 1
8 votes

Short papers for undergraduate course on reading scholarly math

A solution of the Hilbert's third problem. The proof requires some knowledge in the linear algebra. In particular students need to know that $\mathbb{R}$ is a linear space over $\mathbb{Q}$. A detaile …
Yuval Filmus's user avatar
  • 1,906