作者sorrow12345 (我和白木住一起)
看板logic
標題[請益] 題目兩題請教
時間Tue Feb 24 16:16:48 2009
這是今年某大學哲學研究所的推薦甄試考題，請教各位高手不吝賜教^^
"Lxy" stand for "x loves y"
"Hxy" stand for "x hate y"
"Px" stand for "x is a philosopher"
Please symbolize the following two sentences
1.There are exaclty two philosophers who love the same philosopher.
2.Every philosopher hates every other philosopher unless someone who is not
a philosopher loves them.
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1F：→ krisnight:這種東西該自己念，找邏輯教科書，從頭念到述詞邏輯那章 02/27 22:30
2F：→ krisnight:，你就會了。 02/27 22:30
3F：推 YuGar:Px, Py, Lxy, Lyy 一行解決 02/27 23:43
4F：推 fourchette:樓上的回答有問題。那只是其中一種情況而且沒"exactly" 02/28 22:57
5F：→ fourchette:這種東西要自己用想的。光用念的很難"透徹地"了解。 02/28 23:01