您可以自己再查一下自然數的標準模型。至於哲學家更沒關係了,又基本不牽涉數字,且一階邏輯是完備的。:)
所有跟帖:
• 你像是有話沒說完一樣:)有一階,有沒有二階? -JSL2023- ♂ (0 bytes) () 11/01/2024 postreply 09:21:43
• 你像是有話沒說完一樣:)有一階,有沒有二階? -JSL2023- ♂ (0 bytes) () 11/01/2024 postreply 09:21:43
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