Castle Hotel and Spa. History. Long before the Castle Hotel & Spa gained its sterling reputation as a world-class destination for relaxing and romantic getaways with superb cuisine it held a prominent place in Westchester County and New York City society at the turn of the century.
A heptagram, septagram, septegram or septogram is a seven-point star drawn with seven straight strokes. The name heptagram combines a numeral prefix, hepta-, with the Greek suffix -gram. The -gram suffix derives from Î³ÏÎ±Î¼Î¼á¿Ï (grammÄs) meaning a line.
The (Sigma sign) is the 18th letter in the Greek alphabet. Mathematically, Sigma is a summation notation which basically means âsum it upâ. This math symbol was first used by Leonhard Euler, a Swiss mathematician, in representing the addition of a series of mathematical expressions. Golden Ratio Another popular math symbol is the Golden Ratio which is also called the divine proportion or golden section or golden mean.