Analogous definitions can be made for space requirements. Although time and space are the most well-known complexity resources, any complexity measure can be viewed as a computational resource. Complexity measures are very generally defined by the Blum complexity axioms. Other complexity measures used in complexity theory include communication complexity, circuit complexity, and decision tree complexity.
Time and space are both examples of what type of resource? A complexity resource can also be described as what other type of resource? What is typically used to broadly define complexity measures? Communication complexity is an example of what type of measure? Decision tree is an example of what type of measure?