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The Boolean hierarchy is the hierarchy of Boolean combinations (intersection, union and complementation) of NP sets. Equivalently, the Boolean hierarchy can be described as the class of Boolean circuits over NP predicates. A collapse of the Boolean hierarchy would imply a collapse of the polynomial hierarchy.
Formal definition, Hardness & Overview
Explore the main themes, entities and connections around Boolean hierarchy. Start with the topic map, then use the sections below for research and deeper semantic analysis.
Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.
High-confidence facts extracted from structured source data. Use them as anchors for further research.
Browse the full topic structure. Each item opens a new analysis centered on that subject.
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See the strongest relationship patterns around the current topic before diving into the raw triples.
Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.
hierarchy np boolean classes intersection union class definitions defined follows bh2k languages language polynomial definition hardness conp complementation bh dp
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Boolean hierarchy | is a | hierarchy of Boolean combinations | 0.90 | text |
| Boolean hierarchy | related to Hardness | Hardness | 0.60 | section |
| Boolean hierarchy | related to Hardness | Boolean | 0.60 | section |
| Boolean hierarchy | related to Hardness | NP-complete | 0.60 | section |
| Boolean hierarchy | related to Hardness | In | 0.60 | section |
| Boolean hierarchy | related to Hardness | BH2k-hardness | 0.60 | section |
These clusters group vocabulary that occurs around closely connected concepts in the source material.
Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.