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出典:Wiktionary
出典:『Wiktionary』 (2025/04/17 17:57 UTC 版)
braket
出典:『Wiktionary』 (2025/10/14 00:04 UTC 版)
Concatenation of the terms bra and ket, which were introduced in 1939 and in turn derive from the splitting of the English word bracket.
bra-ket (plural bra-kets)