In functional analysis, partial differential equations, and many other branches of mathematics we use the concept of duality and dual spaces, dual operators,…, why duality has this big importance in mathematics? What’s the main role of this notion? When duality was introduced?
Viera Čerňanová
Dear Abdelhak, I consider the duality a fascinating phenomenon, since the study of the dual (space, operator,...) allows to get knowledge about the original.
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