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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/

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 …
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 …
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
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 …
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