“Euler characteristic of a topological space X”的概念、定义、翻译、参考文献-科学参考

单词	Euler characteristic of a topological space X
释义	Euler characteristic of a topological space X [`ȯi·lǝr ´kar·ik·tǝ`ris·tik ǝv ǝ ´täp·ǝ¦läj·i·kǝl ¦spās `eks] ^MATHEMATICS The number χ (X ) = ∑(-1)^qβ_q , where β_q is the qth Betti number of X.
随便看	Paracanthopterygii paracentesis paracentric paracentric inversion para-chlorobenzoic acid para-chlorophenol parachor parachronology parachute parachute flare parachute fragmentation bomb parachute-opening shock parachute troops parachute weather buoy paraclinal paracoccidioidomycosis paracolon bacteria paracompact space paracondyloid paracone paraconformity paraconglomerate paraconid paracoquimbite paracrate

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