Path: ...!weretis.net!feeder9.news.weretis.net!news.quux.org!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Julio Di Egidio Newsgroups: sci.logic Subject: Re: What is it, a Bird or an Airplane? (Was: Happy Now? (Was: Please be patient)) Date: Sat, 21 Dec 2024 01:58:17 +0100 Organization: A noiseless patient Spider Lines: 23 Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Sat, 21 Dec 2024 01:58:18 +0100 (CET) Injection-Info: dont-email.me; posting-host="753862d9528b1832f19ea3b611748cc9"; logging-data="3645686"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+k01EZxQsYGxsPMOAISzvg8C8rGoh4Edo=" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:aW3EpMJ9MrmxtopYB0C1LCfDrBw= Content-Language: en-GB In-Reply-To: Bytes: 1863 On 21/12/2024 01:30, Mild Shock wrote: > Hi, > > Could you define what you mean by "gentzen"? Really?? This is what I mean by "gentzen" (lowercase): Code is law! All else failing... > Can you convert this proof: > > > ?- prove(pos, []=>(a->(a->b))->(a->b), Ps). > > Ps = [impI,impI,impE(1),[init(0)],[impE(0),[init(0)],[init(0)]]] ; > > false > > Into a BCK expression? I'll see if I can figure it out. -Julio