Christopher Latham Sholes Christopher Latham Sholes Christopher Latham Sholes (February 14, 1819 – February 17, 1890) was an American inventor who invented the QWERTY keyboard, and along with Samuel W. Soule, Carlos Glidden and John Pratt, has been contended as one of the inventors of the first typewriter in the United States. He was also a newspaper publisher and Wisconsin politician. Born in Mooresburg, in Montour County, Pennsylvania, Sholes moved to nearby Danville and worked there as an apprentice to a printer. After completing his apprenticeship, Sholes moved to Milwaukee, Wisconsin in 1837, and later to Southport, Wisconsin (present-day Kenosha). He became a
Black–Scholes model the simple Black–Scholes model does not reflect this process. A large number of extensions to Black–Scholes, beginning with the Black model, have been used to deal with this phenomenon. See Bond option: Valuation. In practice, interest rates are not constant they vary by tenor (coupon frequency), giving an interest rate curve which may be interpolated to pick an appropriate rate to use in the Black–Scholes formula. Another consideration is that interest rates vary over time. This volatility may make a significant contribution to the price, especially of long-dated options.This is simply like the interest rate and bond price relationship which