Philosophy of Mathematics is an active branch of Philosophy addressing questions about the character of Mathematics, the conduct of mathematical inquiry, and the role of mathematical objects in describing empirical phenomena. As a form of philosophical inquiry, it examines the record of mathematical inquiry and poses...

The philosophy of science is the branch of philosophy which deals with the study of science (in the sense of “natural science”). The philosophy of science is closely related to epistemology. It seeks to explain such things as the nature of scientific statements, the way in which they are produced,...

For non-technical usage see Pragmatism (non-technical usage). For themes emphasized by Charles Sanders Peirce see Pragmaticism. Pragmatism, as a school of philosophy, is a collection of many different ways of thinking. Given the diversity among thinkers and the variety among schools of thought that have adopted this term over the years, the term pragmatism has become all...

Semiosis is any form of activity, conduct, or process that involves signs, including the production of meaning. The term was introduced by Charles_Sanders_Peirce (1839?1914) to describe a process that interprets signs as referring to their objects, as described in his theory of sign relations, or semiotics. Other theories...