Title: Axiom
Author: R.C. McLachlan
Series: Part Three of Theorems
Pairing: Loki/Tony
Word count: 24,337
Warnings: Major character injury, brain death, coma, explicit sex, explicit language, gratuitous misuse of Norse mythology

Summary: The term for a mathematical starting point is an axiom. Loki does not know if there is a word for an ending.

You are standing in a field looking at the stars. Your arms are resting freely at your side, and you see that the distant stars are not moving. Now start spinning. The stars are whirling around you and your arms are pulled away from your body. Why should your arms be pulled away when the stars are whirling? Why should they be dangling freely when the stars don't move?

Solve for X, by R.C. McLachlan
Tony/Loki
Avengers movie!verse
17,421 words

Summary: “Suit yourself, Rudolph,” Stark says, tossing his empty soup bowl down and bringing up another false screen of light, tapping rapidly on it. “Find X.” Stark slides the image over to him, fingers pinning it down to the table, trapping naught but air and offering it as an olive branch. Whatever darkens Stark’s eyes when their gazes meet is not pity, not blame, and there are drops of onion soup in his ridiculous beard. 

Loki slowly reaches over to tap the little X that is revealed once Stark lifts his thumb away and says, “I found it.”