牵索 发表于 2025-3-28 17:20:40
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https://doi.org/10.1007/978-3-531-90795-6cation’, ‘equidistant’, etc. The grammar is in part organized in accordance with temporal categories: present, past, future. If we tried to remove all words, prefixes, and suffixes with a temporal or spatial meaning from the language we would surely all but destroy it. The system of temporal and spaset598 发表于 2025-3-29 03:36:17
Edgar Grande Prof. Dr.,Ute Hartenberger Dr.anization can be effected at various levels. For example, we may construct the real numbers from the integers, or we may take axioms for the real numbers themselves as our starting point. Mr. Noll’s space-time structure furnishes a foundation for the theory of constitutive equations he formulated so不规则的跳动 发表于 2025-3-29 10:19:12
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https://doi.org/10.1007/978-3-658-06817-2he arguments against it range somewhat as follows: “Covariance is a mathematical artifice — no physical meaning can be attached to it. Every equation can be expressed covariantly. How can a covariant form be right or wrong from a physical point of view ? — covariance is only a method of expressing g