Intuitionism: An Introduction

A. S. TROELSTRA a₁ admissible sequence Akad algebra Amsterdam analogous arithmetic asserted axioms belongs to Q canonical number-generator Cauchy sequence choice coincides components condition consistency proof construction contains continuum contradiction convergent defined Definition denote detachable subspecies determinant digits element elementary domain equations equivalent example exists fan-theorem finite number follows formal system formula function f(x given Griss Heyting Hilbert Hilbert space implies impossible Indagationes math integer intuitionism intuitionistic logic intuitionistic mathematics Intuitionistische L. E. J. Brouwer least one value lemma matical means measurable functions measurable region method natural number negation negationless notion nth lattice-point order relation p₁ point q predicate calculus Proc Proof propositional calculus proved Q is measurable rational numbers rational point real number-generators real numbers Remark Rootselaar S-barred satisfies sense species of real summable suppose Theorem theory true twin primes vectors wiskunde x₁