It's called a mint mark and identifies the mint that struck the coin.
See the Related Question for more information.
"Start" and "end" are not really concepts that apply to vectors.
The letter used to represent current in equations is "I." This designation comes from the French term "intensité de courant," which translates to "current intensity." In electrical equations, current is typically measured in amperes (A).
A letter is usually a mint mark, indicating where a coin was made. For example, on American coins, P stands for Philadelphia, and D means Denver.
1 cent. From 1965 to 1967, no U.S. coins carried mint marks.
No they are not, in general just because a coin has a mintmark does not make it more valuable.
re-designation letter
The two letter designation for Canada is CA The three letter designation for Canada is CAN
designation
A Bayer designation is a stellar designation in which a specific star is identified by a Greek letter, followed by the genitive form of its parent constellation's Latin name.
In 1952, the designation or code letter on a Georgia license plate for a pickup truck was A/p.
In America, "RD" is an abbreviation for "red", a grading-service color designation for copper coins.
R=Romeo
That's the two-letter designation for Ireland.
A sample letter informing a change in designation can be found in many templates online. The sample letter will explain the job change and be formally address to the current supervisor and the new supervisor.
The Greek letter designation is a Greek letter followed but the possessive form of the constellation name (for example, alpha-Orionus). In most cases (Ursa Major being a notable exception), the brightest star in a constellation designated with the Greek letter alpha, the second-brightest with the Greek letter beta, and so on. Thus the Greek letter designation gives information about both relative brightness and location. There is no connection between the Greek letter designation and ancient Arabic names.
Alphard is the brightest star in the constellation Hydra.It's designation or letter is Alpha Hydrae
Assuming you mean the international radio designation for the letter 'K' - it is Kilo.