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ČT edu. ČT edu is a web portal of the Czech Television, which offers teachers, pupils and parents thousands of short videos to supplement teaching. Videos cover topics from pre-school, primary and secondary education and are divided according to grades, but also according to subjects and the specific subject they cover.
v. t. e. Z-Library (abbreviated as z-lib, formerly BookFinder) is a shadow library project for file-sharing access to scholarly journal articles, academic texts and general-interest books. It began as a mirror of Library Genesis, but has expanded dramatically. [ 7][ 8]
Online public access catalog. The online public access catalog ( OPAC ), now frequently synonymous with library catalog, is an online database of materials held by a library or group of libraries. Online catalogs have largely replaced the analog card catalogs previously used in libraries.
English Wikipedia (marked blue in the graph) is the most-read version of Wikipedia, accounting for 48% of the website's global traffic as of 2021. The English Wikipedia is the most edited Wikipedia's language version of all time. The English Wikipedia reached 4,000,000 registered user accounts on 1 April 2007, [ 23] over a year since the ...
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Academia.edu is a commercial platform for sharing academic research that is uploaded and distributed by researchers from around the world. All academic articles are free to read by visitors, however uploading and downloading articles is restricted to registered users, with additional features accessible only as a paid subscription. [ 3][ 4]
Unitary group. In mathematics, the unitary group of degree n, denoted U ( n ), is the group of n × n unitary matrices, with the group operation of matrix multiplication. The unitary group is a subgroup of the general linear group GL (n, C), and it has as a subgroup the special unitary group, consisting of those unitary matrices with determinant 1.
Dabing Street is a Czech comedy TV series. The plot is set in the summer of 2001 and describes what happens in a fictional dubbing company Studio ZERO after its owner dies. His widow takes over the company and tries to share the management of the studio with the employees. The series is based on the play of the same name by Dejvické Theatre ...