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On weakly rigid monounary algebras. (English) Zbl 0439.08003

08A60 Unary algebras
08A30 Subalgebras, congruence relations
08A35 Automorphisms and endomorphisms of algebraic structures
03E55 Large cardinals
03G25 Other algebras related to logic
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[1] COMER S. D., LE TOURNEAU J. J.: Isomorphism types of infinite algebras. Proc. Amer. Math. Soc., 21, 1969, 635-639. · Zbl 0175.01501
[2] HICKMAN J. L.: Rigidity in order types. J. Aust. Math. Soc., 24, 1977, 139-161. · Zbl 0377.06001
[3] KOPPELBERG S.: A complete Boolean algebra without homogeneous or rigid factors. Math. Ann., 232, 1978, 109-114. · Zbl 0394.06007
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