i.e. linear operators, have been most completely studied. Their theory is essentially a generalization of [[Linear-algebra(2
...tely-continuous or compact operators (cf. [[Completely-continuous operator|Completely-continuous operator]]; [[Compact operator|Compact operator]]). If $ A $
36 KB (5,132 words) - 08:10, 30 January 2022
...nvironmental factors, characteristics of the comfort of a present security system, etc. It is usually assumed that the number of ingredients is finite and th
The Leont'ev model was also initially formulated in continuous time as a system of differential equations
37 KB (5,562 words) - 11:11, 7 January 2024
...suitable for obtaining invariants of geometric objects. Thus, the complete system of invariants of a Riemannian metric, found by E. Christoffel and R. Lipsch
...rvature tensor of the space and, for a simply-connected analytic space, is completely defined by the curvature tensor and all its covariant derivatives at a poin
30 KB (4,323 words) - 19:35, 5 June 2020
...ir authors' lifetimes. The work of other authors was, for unknown reasons, completely ignored. As a consequence, some results were achieved multiple times, albei
...ore or less basic in contemporary mathematics, starting from scratch ... a completely formalist conception."<ref>Zerner cited in O'Connor and Robertson</ref>
91 KB (14,186 words) - 16:58, 23 November 2023