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物理学\数学中常用的“等号”
2022-07-15 16:27:00 【teengad】
≈ \approx ≈:(数学)约等于(别的形式: ∼ = \sim= ∼=, ≒ \fallingdotseq ≒)(almost equal to);(拓扑)同胚(Homeomorphic to)
≅ \cong ≅:(数学)大约等于(approximately equal to)(数学)大约等于;(几何)一致(Congruent to);(代数、范畴论、逻辑)同构到(Isomorphic to)
∽ \backsim ∽:相似符号
≡ \equiv ≡:定义,恒等符号
∝ \propto ∝:正比例符号
≆ \ncong ≆:(数学)既不近似也不等于(Neither approximately nor actually equal to);(几何学)不一致的(Not congruent to);(数学)不同构的(Not isomorphic to)
≃ \simeq ≃:渐近等于(asymptotically equal to),或大约等于(approximately equal to)
≠ ~ \tilde{\neq} =~:大约但不等于(approximately but not actually equal to)
≠ \neq =:不等于
≃ \cancel{\simeq} ≃:不渐近等于(Not asymptotically equal to)
= d e f \overset{\mathbf{def}}{=} =def,根据定义等于
- 参考文献:
Category:Mathematical notation symbols
Category:Mathematical Operators block
Difference between “≈”, “≃”, and “≅”
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