Let $\scr{T}$ be the first order theory of diagonalizable algebras. We define a bijection φ from the atomic formulas of $\scr{T}$ (identities) to the open formulas of $\scr{T}$. φ is an algebraic ...
The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...
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