"Kûn (sò͘-ha̍k)" pán-pún chi-kan bô-kāng--ê tē-hng
刪去的內容 新增的內容
Tē 6 chōa:
Chim-chiok lâi-kóng, chi̍t-ê kûn "G" nā sêng-li̍p, piáu-sī i sī m̄-sī khang-ê chip-ha̍p, i ū chi̍t thò [[sǹg-hoat]] "•", chia ê chip-ha̍p kap sǹg-hoat ài móa-chio̍k sì-ê tiâu-kiāⁿ:
* Ha̍h
* Ha̍h
* Ū tan-ūi-goân (identity element): "G" lāi-té ū chi̍t-ê goân-sò͘ "e", kap só͘-ū ê "a" ū "e • a = a • e = a" koan-hē.
* Ū ge̍k-goân (inverse element): "G" lāi-té bí-chi̍t-ê "a", tùi-taⁿ chi̍t-ê tī"G" lāi-té ê "b", in ū "a • b = b • a = e" koan-hē, chia-ê "e" sī téng-chi̍t-hāng kóng ê tan-ūi-goân.
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