The most common and most likely answer to this crossword clue is the 7 letter word EXTREMA
I've seen this crossword clue in The Guardian
E
X
T
R
E
M
A
More clues leading to the result EXTREMA
- Furthest points, in context, remain
- Teams, ignoring the odds, breaching more limits
- Partial text remains source for mathematical values
- More boxing seems regularly to go to points at the end
- Next R.E.M. album? They couldn’t be further away from it
- The high and low points: in context, remarkable
- Limits cut back over variable term
- . Half of them in addition get points at the end
- In Addition, bracket log base M is a mathematical term
- Additional measure taken to reach the farthest points
Buddy explains!

The straight part
We know that "mathematical values" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case mathematical values = extrema.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does EXTREMA mean?
EXTREMA noun- A point, or value, which is a maximum or a minimum