Erdal İnönü Commemorated on Centennial of Birth; Legacy in Theoretical Physics Highlighted
A new paper on arXiv marks the 100th anniversary of Turkish theoretical physicist Erdal İnönü's birth by reviewing his scientific legacy and introducing his most celebrated contribution, the İnönü-Wigner contraction. İnönü was a key figure in developing modern theoretical physics in Türkiye and co-developed the contraction concept with Nobel laureate Eugene Wigner. The paper uses the intuitive geometric analogy of a sphere flattening into a plane to make this mathematically significant idea accessible to a broader audience.
Submitted to arXiv on June 4, 2026, the seven-page paper commemorates the centennial of Erdal İnönü's birth by examining both his personal scientific vision and his institutional contributions to physics in Türkiye. The central focus is the İnönü-Wigner contraction, a mathematical procedure by which one symmetry group can be derived as a limiting case of another — illustrated here through the geometric example of a sphere whose radius grows until its surface locally resembles a flat plane. This contraction framework has broad significance in modern physics, underpinning relationships between relativistic and non-relativistic mechanics, among other applications. The article also touches on İnönü's role in building academic institutions, situating his work within the broader history of theoretical physics in the region. Written by Ilmar Gahramanov, the piece is categorized under History and Philosophy of Physics as well as Mathematical Physics, reflecting its dual aim of historical commemoration and pedagogical exposition.
What's missing
The broader reception and modern applications of the İnönü-Wigner contraction beyond the sphere-to-plane analogy are not elaborated upon in the abstract.
What different sources said
- arXiv physicsCenter
Erdal \.In\"on\"u at 100: From the Sphere to the Plane
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