EntityQ1047000· pop 28· linked from 594 articlesvaliditySign in to savelogical correctness of an argument's steps, regardless of the truth of the premisesConnectionssemantic theory of truthEntitymathematical logicEntitypropositionEntityfirst-order logicEntityformal systemEntityrecursive setEntitysemantics of logicEntitystructureEntitydiagramEntityground expressionEntitylogicEntitytruthEntityInternational Standard Book NumberEntityprobabilityEntitynameEntityset theoryEntityfunctionEntityreasonEntitysetEntityaxiomEntityCategoriesArgumentsConcepts in logicDeductive reasoningLogical truth