2015, ordinario marble, 46*10*5 cm

This is most beautiful mathematical equation, named Euler’s Identity, because

• the most important numbers: 0, 1
• the most important symbols:
  • Pythagoras  number π,
  • Euler number e
  • imaginary number i
• the most important operations:
  • raising to a power
  • multiplication
  • addition
  • equation

occur in it. This website of LifeScience gives an explanation.