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math.LO2020
Remarks on theories of free algebras and modules
Anand Pillay, Philipp Rothmaler
We ask some questions and make some observations about the (complete) theory T (infinity, V) of free algebras in V on infinitely many generators, where V is a variety in the sense…
math.LO2019★ 1 cited
Implications of positive formulas in modules (RIMS)
Philipp Rothmaler
In this survey the role of implications of positive formulas -- finitary and infinitary -- is dicussed, in general and in module categories, where they seem of particular importanc…