Graded embeddings, root generated subalgebras and $\ddot{I}€$-systems for quasisimple Kac-Moody superalgebras

Irfan Habib, Deniz Kus, Chaithra Pilakkat

Motivated by a construction of Gorelik and Shaviv, we show that the real roots of a root generated subalgebra associated with a $\ddot{I}€$-system contained in the positive roots are obta…