On singular projective deformations of two second class totally focal pseudocongruences of planes.
Goldberg, Ludmila (1988)
International Journal of Mathematics and Mathematical Sciences
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Goldberg, Ludmila (1988)
International Journal of Mathematics and Mathematical Sciences
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Jindřich Veverka (1969)
Czechoslovak Mathematical Journal
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Roland Coghetto (2016)
Formalized Mathematics
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The real projective plane has been formalized in Isabelle/HOL by Timothy Makarios [13] and in Coq by Nicolas Magaud, Julien Narboux and Pascal Schreck [12]. Some definitions on the real projective spaces were introduced early in the Mizar Mathematical Library by Wojciech Leonczuk [9], Krzysztof Prazmowski [10] and by Wojciech Skaba [18]. In this article, we check with the Mizar system [4], some properties on the determinants and the Grassmann-Plücker relation in rank 3 [2], [1], [7],...
Boskoff, Wladimir G., Suceavă, Bogdan D. (2008)
Beiträge zur Algebra und Geometrie
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Keppens, Dirk, Van Maldeghem, Hendrik (2009)
Beiträge zur Algebra und Geometrie
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