Each of the following phrases is a permutation of the letters of a mathematical term.
The first letters of the terms convey the greeting.

(1) LIT UP DAME ________________________________
(2) SAT IN MASS ________________________________
(3) UNICED ALE ________________________________
(4) U SAID R ________________________________
(5) CROLI CAPER ________________________________
(6) I ATE RONY COD ________________________________
(7) PLENTY MORE, MAC ________________________________
(8) HE SHIPS TOY ________________________________
(9) LEFT NO RICE ________________________________
(10) TINY TEDI ________________________________
(11) SOUL MATE IN US ________________________________
(12) NET ANT G ________________________________
(13) I'M MANI ________________________________
(14) VICE AT OASIS ________________________________
(15) STANCE ________________________________