Description
I will present a bottom-up framework for constructing 6d (1,0) supergravity theories from supergravity blocks. Each block is a basic unit built from a little string theory sector associated with the H-string, together with the external BPS generators attached to it, and is characterized by carrying intrinsic gravitational tensors. As a first application, I will give the classification of non-Higgsable gravity blocks and discuss candidate supergravity theories that arise in this framework but have no realization in ordinary F-theory geometry.
