Across
- 1. Musical lead-in to series or mean
- 6. Literary repetition
- 7. Literary device using two senses of a word in combination
- 9. 3-in-1 note package, say
- 15. Coordinate system involving a radius and an angle
- 16. Feature of 1/x and tan x
- 18. Pair with delta, regarding functions
- 19. Man who helped discover eponymous law regarding light efficiency
- 22. Fermat's not-last exponent, maybe
- 23. Calil, tsyhtema, or atnegam, with some wordplay
- 25. Pointed arch type archetype?
- 27. Currency
- 28. One of two triangle middles involving a circle
Down
- 2. Polynomial nullifier
- 3. A law relating two forms of composition, categorically
- 4. Rapid alternation of nearby notes
- 5. Technique to generate text by looking at what words/chunks of letters are likely to follow, for example
- 8. Chord roll
- 10. Dragonfruit
- 11. One who made a point of contact triangles
- 12. With "expected," an average result of a function
- 13. Regularly consumed psychoactive stimulant
- 14. Creator of a cyclic inequality involving a/(b+c)
- 17. Smallest positive prime
- 20. "Ghostlike" particle passing through everyone constantly
- 21. An increasing family of function decreasing in speed of increase
- 24. Maker of a theorem placing P and Q on each other's polars
- 26. Chord with C, F, and G, maybe
- 27. Categorical injective equivalent