Abstract
In this article, we define a two-component coupled BKP hierarchy defined by four pseudo-differential Lax operators and construct its additional symmetries. These additional symmetries have a structure of a coupled $$w^B_{\infty }\times w^B_{\infty } $$ Lie algebra. Further we construct a new coupled D type Drinfeld–Sokolov hierarchy, which is a reduction of the two-component coupled BKP hierarchy, and the hierarchy possesses a complete Virasoro symmetry.
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