pacific
发表于 2025-3-26 23:57:15
chenden Gesetzen. Die Abtrennung einzelner Zweige der Physik - so der Astro nomie und Astrophysik, der Geophysik einschließlich der Wetterkunde - ist nur in den besonderen Methoden und dem großen Umfange derselben begründet. Zwischen der Chemie und der Physik gibt es heute keine scharfe Grenze mehr
offense
发表于 2025-3-27 01:13:51
Introduction,ly for the communication of their results and their problems. While mathematicians have been claiming the greatest possible exactness for their methods, they have been less be sensitive as to their means of communication. It is well known that Leibniz proposed to put the practice of mathematical com
我要威胁
发表于 2025-3-27 08:04:59
Propositional Logic,is. According to some traditional views reasoning consists of the building of chains of linguistic entities by means of a certain relation ‘... follows from ...’, a view which is good enough for our present purpose. The linguistic entities occurring in this kind of reasoning are taken to be ., i.e.
抛媚眼
发表于 2025-3-27 09:43:35
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抛射物
发表于 2025-3-27 13:55:42
Completeness and Applications,ore we get to the theorem. Although the proof of the completeness theorem is not harder than, say, some proofs in analysis, we would advise the reader to read the statement of the theorem and to skip the proof at the first reading and to return to it later. It is more instructive to go to the applic
Radiculopathy
发表于 2025-3-27 21:18:49
Second Order Logic,l elements . of ∣A∣ ...” and “there exists an element . of ∣A∣ ...”. We will now allow a second kind of variable ranging over subsets of the universe and its cartesian products, i.e. relations over the universe.
指令
发表于 2025-3-28 00:09:12
Intuitionistic Logic,rses can be surveyed in their totality. In particular can we in a global manner determine whether A ⊨ ∃xϕ(x) holds, or not. To adapt Hermann Weyl’s phrasing: we are used to think of infinite sets not merely as defined by a property, but as a set whose elements are so to speak spread out in front of
GREG
发表于 2025-3-28 02:34:41
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躺下残杀
发表于 2025-3-28 09:09:07
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羽毛长成
发表于 2025-3-28 12:06:35
10楼