Principles of Intuitionism [electronic resource] : Lectures presented at the summer conference on Intuitionism and Proof theory (1968) at SUNY at Buffalo, N.Y. / by A. S. Troelstra.

Logic -- Elementary arithmetic -- Species -- Sequences and constructive (lawlike) objects -- Elementary theory of real numbers -- Ordering relations and order on the real line -- Constructive or lawlike analysis -- Lawless sequences of natural numbers -- Choice sequences -- Spreads and a theory of real numbers -- Topology; separable metric spaces -- Applications of the continuity principles and the fan theorem -- Well-orderings and ordinals -- Species revisited; the role of the comprehension principle -- Brouwer's theory of the creative subject.