Some remarks on the algebraic structure of the Medvedev Lattice
Some remarks on the algebraic structure of the Medvedev Lattice
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发表时间:
1990
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影响因子:
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通讯作者:
A. Sorbi
中科院分区:
文献类型:
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作者:
A. Sorbi
Abstract This paper investigates the algebraic structure of the Medvedev lattice . We prove that is not a Heyting algebra. We point out some relations between and the Dyment lattice and the Mučnik lattice. Some properties of the degrees of enumerability are considered. We give also a result on embedding countable distributive lattices in the Medvedev lattice.