johncarlosbaez, (edited ) For my Christmas present this year I hope Santa fixes this website - or shuts it down. This symbol does not mean "approximately equal to" - that's
โ
This symbol means "isomorphic to", or "congruent to". I cannot stand another year with this misinformation ruining my Google searches.
https://www.fileformat.info/info/unicode/char/266f/index.htm
๐๐๐ซ๐ซ๐๐ญ๐จ๐ซ: ๐๐ฎ๐ญ ๐ญ๐ก๐ ๐ฉ๐ซ๐จ๐๐ฅ๐๐ฆ ๐ ๐จ๐๐ฌ ๐๐๐๐ฉ๐๐ซ ๐ญ๐ก๐๐ง ๐๐๐๐ณ ๐ญ๐ก๐ข๐ง๐ค๐ฌ. ๐๐๐๐ ๐จ๐ง!