EntityQ1089708· pop 9· linked from 323 articlesChurch encodingSign in to saverepresentation of the natural numbers as higher-order functionsConnectionslambda calculusEntitysemantic theory of truthEntitymathematical logicEntityfunction compositionEntityfirst-order logicEntityformal systemEntitylistEntityrecursive setEntitysemantics of logicEntitystructureEntityground expressionEntitydiagramEntitymathematicsEntitylogicEntityAlan TuringEntityarithmeticEntityInternational Standard Book NumberEntitynatural numberEntityintegerEntityadditionEntityCategoriesLambda calculus