@sur_27The origin of the integral symbol, traced back to Leibniz's notation.
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Origin of the Integral symbol
Photo by @sur_27· Jul 21, 2026· Science
About this photo
The image is a close-up of an old handwritten page filled with complex mathematical equations and diagrams. The writing is in a dark ink on aged, textured paper, giving it a historical and academic feel. There are several geometric diagrams, including what appears to be a hyperbola, interspersed with the equations. The overall mood is one of intense intellectual work and discovery. A notable detail is the presence of what looks like a watermark or a faint imprint on the paper itself. The text is entirely in Latin and mathematical notation.
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