4 problems

All-loop BPS symmetry conjecture. The algebra $\mathfrak{g}$ is a symmetry of BPS amplitudes at all loop orders.

Let ${\cal M}_{0,n}^+$ be the positive moduli space of $n$ ordered points on a line, and let the $D=3$ twistor-string map send a point of this space to the corresponding kinematic…

Generalized cycles and tails conjecture. The complete effect of the pinching procedure in the Bern–Kosower formalism may, in the $Q_n$ integrand, be taken into account simply by ad…

Two-limiting-ray conjecture. The asymptotic chambers of only two limiting rays are relevant for the 8-point MHV amplitude.