A note on hyperbolic partial differential equations. II.
Bogdan Rzepecki (1981)
Mathematica Slovaca
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Bogdan Rzepecki (1981)
Mathematica Slovaca
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Andrzej Kamiński (1988)
Czechoslovak Mathematical Journal
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Vladimír Ďurikovič (1968)
Archivum Mathematicum
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Ján Borsík (1992)
Mathematica Bohemica
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Mappings preserving Cauchy sequences and certain types of convergences connected with these mappings are investigated.