Path: csiph.com!news.mixmin.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: wij Newsgroups: comp.theory Subject: Is NPC useless? Date: Tue, 11 Jun 2024 13:47:32 +0800 Organization: A noiseless patient Spider Lines: 7 Message-ID: <296ed519c7d2c9bfac06dc145f40fbabf765a3be.camel@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Injection-Date: Tue, 11 Jun 2024 07:47:33 +0200 (CEST) Injection-Info: dont-email.me; posting-host="eca6684f110f6525b19aa3cdebea2e25"; logging-data="969511"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/n/bWMUJGifsHdIVsPUwe/" User-Agent: Evolution 3.50.2 (3.50.2-1.fc39) Cancel-Lock: sha1:x2k97sroqAVhJhYdR8Whh/Bxouk= Xref: csiph.com comp.theory:106922 NPC specifies a set of very significant problems, and identifies such probl= ems. So, is very useful. But, let p=3D"Determin whether a given number n is 5". = If NPC cannot exclude p in NPC, what is the usefulness of NPC?