Ab2ab2 26.4k1313 gold badges7272 silver badges105105 bronze badges 10 And from the 60s, in my Latin class we chanted the linked Ubi, ubi est meus sub ubi? bib The natural figures form a set, commonly symbolized like a bold N or blackboard bold ⁠ N displaystyle mathbb N Commented Jan https://ayurvedickidneycapsules.poetry.blog/