A not-too-serious blog, mostly about mathematics.https://lemma.cafe/enhttps://lemma.cafe/en/posts/coffee-cooling/https://lemma.cafe/en/posts/coffee-cooling/Newton's law of cooling, one cup at a timeFri, 02 Oct 2026 00:00:00 GMTcalculusodehttps://lemma.cafe/en/posts/hello-lemma/https://lemma.cafe/en/posts/hello-lemma/A small place for lemmas and coffeeThu, 01 Oct 2026 00:00:00 GMTmeta