The labour value theory is a concept in economics that suggests the value of a good or service is determined by the amount of labor required to produce it.

The labor value theory is a concept in economics that suggests the value of a good or service is determined by the amount of labor required to produce it.

The labor theory of value states that the value of a good or service is determined by the amount of labor required to produce it.

Ramsey's theorem is a fundamental result in combinatorial mathematics.

Menger's theorem is a fundamental result in graph theory.

The theoretical keys to success are hard work and determination.

The theoretical key to success is hard work.

The Grothendieck-Riemann-Roch theorem is a fundamental result in algebraic geometry.

The scheme theory provides a framework for studying algebraic varieties.

Nudge theory suggests that small changes in the way choices are presented can significantly influence people's behavior.