The first sign of syphilis is a small sore, called a chancre (SHANG-kur). The sore appears at the spot where the bacteria entered your body. While most people infected with syphilis develop only one chancre, some people develop several of them. The chancre usually develops about three weeks after exposure.
The colon is the symbol :. It is used in a number of different ways in mathematics. 1. To denote ratio or odds, as in 2:1 (voiced two to one). 2. To mean such that in constructions such as (voiced the set of numbers such that ). 3. To give a name to a map, e.g., (which is equivalent to the function notation ).
Report Abuse. Mathematics using only letters is usually referred to as symbolic mathematics. There are many different branches of maths that use symbols to represent concepts.Here are some examples: â¢ Algebra uses variables for unknown values.â¢ Geometry uses greek letters to represent types of angles and lengths. â¢ Calculus uses many symbols and letters to represent functions and calculus processes (ie. the derivative, integral, gradient, etc).eport Abuse. Mathematics using only letters is usually referred to as symbolic mathematics. There are many different branches of maths that use symbols to represent concepts.