| Answer | Crossword Clue |
|---|---|
| maximals | MAXIMAL, an element of a mathematical set that is followed by no other |
| maximal | an element of a mathematical set that is followed by no other |
| idempotent | Denoting an element of a set that is unchanged in value when multiplied or otherwise operated on by itself |
| placeholders | An element of a sentence that is required by syntactic constraints but carries little or no semantic information, for example the word it as a subject in it is a pity that she left, where the true subject is that she left |
| placeholder | An element of a sentence that is required by syntactic constraints but carries little or no semantic information, for example the word it as a subject in it is a pity that she left, where the true subject is that she left |
