Homonym: φ (Phi)
The symbol "φ" (phi) represents the golden ratio, an important mathematical constant approximately equal to 1.618. This ratio is often found in nature, art, and architecture, where it is believed to create aesthetically pleasing proportions. The golden ratio can be derived from the Fibonacci sequence, where the ratio of consecutive numbers approaches φ as the sequence progresses.
In addition to its mathematical significance, φ is also used in various fields such as geometry, design, and finance. In geometry, it appears in the proportions of a regular pentagon and the pentagram. Artists like Leonardo da Vinci have employed the golden ratio in their works to achieve balance and harmony.