Definition of law by different authors?

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Kelsen: Law is a coercive technique of social control

H.L.A.

Hart: a system of rules authorized by a Rule of Recognition

Dworkin: law is an interpretive attitude towards adjudication

Marx: law is an aspect of the superstructure reflecting the

economic base

John Finnis and Lon Fuller: law is rooted in morality

Criticists and Legal realists: simply deny law exists