03 Mathematical logic and foundations
03Gxx Algebraic logic
03G30 Categorical logic, topoi (3 articles)
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Adámek, Jiří; Hébert, M.; Sousa, L.:
A logic of orthogonality.
(English).
Archivum Mathematicum,
vol. 42
(2006),
issue 4,
pp. 309-334
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Borceux, Francis; Pedicchio, M. Cristina:
De Morgan's and strong De Morgan's laws in a topos of shaves.
(English).
Acta Universitatis Carolinae. Mathematica et Physica,
vol. 28
(1987),
issue 2,
pp. 9-12
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Kříž, Igor:
A constructive proof of the Tychonoff's theorem for locales.
(English).
Commentationes Mathematicae Universitatis Carolinae,
vol. 26
(1985),
issue 3,
pp. 619-630