Intuitionism: An Introduction

a₁ admissible sequence Akad algebra Amsterdam an+1 analogous arithmetic asserted axioms b₁ belongs canonical number-generator Cauchy sequence choice completion of f(x components condition consistency proof contains continuum contradiction convergent deduced defined Definition denote detachable subspecies digits element elementary domain equations equivalent example exists F-inference fan-theorem finitary spread finite number follows formal system formula function f(x Griss Heyting Hilbert Hilbert space implies impossible Indagationes math Infinitely proceeding sequences integer intersection intuitionism intuitionistic logic intuitionistic mathematics Intuitionistische K-barred L. E. J. Brouwer least one value lemma M₁ M₂ matical means measurable functions measurable region metamathematics methods natural number negation Negationless notion nth lattice-point order relation p₁ predicate calculus Proc Proof properties propositional calculus Q is measurable rational numbers rational point real number-generators real numbers Remark satisfies species of real subspecies summable suppose theory true twin primes vectors x₁