Mathematics — pacovalverde.es

• Why 0.1 + 0.2 is not exactly 0.3

  A visual and practical introduction to floating-point number representation.

• Prime numbers: from Euclid to cryptography

  What makes them special, how to find them and why they remain essential.

• Earth’s orbital motion

  A question about orbital shape and perspective turned into a visual explanation.

• Technical and scientific notes

  A historical collection of study notes and materials.

• SciSymbols

  An interactive visual atlas of scientific symbols and notation.