This book provides a wide-ranging and in-depth reappraisal of the relation between Marx's economic theory in Capital and Hegel's Logic by leading Marxian economists and philosophers from around the world. The subjects dealt with include: systematic dialectics, the New Dialectics, materialism vs. idealism, Marx's 'inversion' of Hegel, Hegel's Concept logic, Hegel's Essence logic, Marx's levels of abstraction of capital in general and competition, and capital as Hegelian Subject.