Hans Reichenbach’s Philosophy of Space: Empiricism, Realism and Relationism

Authors

DOI:

https://doi.org/10.5007/1808-1711.2026.e105558

Keywords:

Physical space, Mathematical spaces, Relationism, Realism, Conventionalism, Coordinative Method

Abstract

We propose in this paper a reassessment of Reichenbach’s magnum opus, The Philosophy of Space & Time (1958 [1927]), with a particular emphasis on the first part of the work, devoted to the philosophy of space. First, it is necessary to understand the profound significance of the dual distinction between physical space and mathematical spaces (ch.2), and the role of coordinative definitions within the system of geometries (ch.3), in order to grasp the author’s radical defense of the principle of geometric relativity (ch.4). Finally, we will examine his coordinative classification of space kinds and his defense of spatial three-dimensionality (ch.5). Questions: (a) In what sense does Reichenbach align with Poincaré’s conventionalism, and in which aspects does he diverge? (b) What is the meaning of real geometry for Reichenbach, and how can we understand the concept of real space in his work? – Our conclusions are in favor of the relational perspective of physical space defended by the author. Furthermore, we will reclaim the importance of his legacy, purging it of deconstructive criticisms and continuing the developments made by Adolf Grünbaum.

Author Biographies

Filipe Pamplona, Universidade de São Paulo

Astronomer, specialized in Epistemology and Philosophy of Physics. Main lines of research: philosophy of space, time and foundations of quantum mechanics. Postdoctoral researcher in the Department of Philosophy at the University of São Paulo (USP), with a project funded by FAPESP. PhD in Logic and Philosophy of Science by the University of Lisbon. Thesis: "Space and Subquantum Medium" (2023). Member of the groups: Philosophy of Physical Sciences (USP), Physikós (UFMS), and the Working Group on Philosophy of Physical Sciences (ANPOF).

Dennis Bessada, Universidade Federal da Fronteira Sul

Astrophysicist, specialized in Cosmology and Philosophy of Physics. Associate Professor at Federal University of Southern Frontier (UFFS, campus Realeza) and currently Postdoctoral Researcher at the Philosophy Department at University of São Paulo (USP). My research fields are Classical and Quantum Cosmology; Philosophy of Space,Time and Cosmology. I hold a Bachelor's degree in Physics (IF-USP), a Master's degree in Theoretical Physics (IFT-UNESP), and a PhD in Astrophysics (National Institute for Space Research - INPE). During the PhD program I held a research scholar position at the State University of New York (SUNY) at Buffalo. I also held a Postdoctoral research position at INPE in collaboration with the Institute of Cosmology, Relativity and Astrophysics of Brazilian Center for Research in Physics (ICRA-CBPF).

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Published

2026-08-12