(.) Period
That symbol is called the radical.
There is no specific symbol. The symbol for real numbers is R and that for rational numbers is Q so you could use R \ Q.
A variable
"xi" symbol in maths if used mostly in ven diogrammes and is in the top, right hand corner
A variable
Column Names.
The hyphen symbol (-) is typically used to connect words or parts of words, while the underscore symbol (_) is often used in place of spaces within identifiers in programming, such as variable names. The hyphen symbol is also used in compound words and in some email addresses, while the underscore is commonly used in file names and URLs.
A slash. Example: \ or the famous /
Short phrases like names and titles cannot be protected by copyright. In extreme cases, names can be registered as trademarks, but they must be used in trade to qualify.
A cell address is a combination of the column heading and row heading. So the cell that is where column C and row 3 meet, is cell C3. Cells can also be given actual names that can be used to identify them. You can have a name like Total for a cell.
The symbol for Arogon is Ag, but it used to be A.Answ2. Argon has the symbol Ar, (and referring to the above, Silver (Argentum) has the symbol Ag.I don't know of an Arogon, but there used to be an Aragon in French and Spanish history. And commemorated in US place-names.
In a file path, the backslash "" is commonly used to separate folder names on Windows systems, while the forward slash "/" is typically used on Unix-based systems.
The word qualify, or more properly to qualify, is a verb.
The copyright symbol is used to protect original works like books, music, and art, while the trademark symbol is used to protect brand names, logos, and slogans. Copyright protects creative works, while trademarks protect brand identity.
The first column in a two column proof is used for mathematical statements. The second column is used to state the law or property that makes that statement true - often referring to previous statements in the first column.
Not sure what you mean: if a name is not in the books and movies, it wouldn't qualify as a "Harry Potter name".
column