Examlex
Which subsystem of Earth supplies heat for convection in the mantle?
Contradictories
Statements that cannot both be true at the same time and under the same circumstances.
Contraries
Statements, concepts, or propositions that cannot both be true at the same time, but can both be false.
Subcontraries
In traditional logic, propositions that cannot both be false but can both be true, specific within the square of opposition.
Subalternates
In logic, these refer to propositions that are related in such a way that the truth of one implies the truth of the other, but not necessarily vice versa.
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