Ab2ab2 26.4k1313 gold badges7272 silver badges105105 bronze badges ten And within the 60s, in my Latin course we chanted the connected Ubi, ubi est meus sub ubi? bib The natural quantities kind a set, usually symbolized being a bold N or blackboard bold ⁠ N displaystyle mathbb N b : https://ayurvedickidneycapsules.poetry.blog/2025/09/03/ayurvedic-medicine-for-lifestyle-disorders-cureayu-solutions/