(data structure)

**Definition:**
A *heap* made of a *forest* of *binomial trees* with the *heap property* numbered k=0, 1, 2, …, n, each containing either 0 or 2^{k} *nodes*. Each tree is formed by linking two of its predecessors, by joining one at the *root* of the other. The operations of insert a value, decrease a value, delete a value, and merge or join (*meld*) two queues take *O(log n)* time. The find minimum operation is a constant *Θ(1)*.

**Generalization** (I am a kind of ...)

*heap*.

**Aggregate parent** (I am a part of or used in ...)

*priority queue*, *Dijkstra's algorithm*.

**Aggregate child** (... is a part of or used in me.)

*binomial tree*.

**See also**
*Fibonacci heap*.

*Note:
Binomial heaps are so called because the number of nodes at each level of each subtree is a binomial coefficient. Sometimes called a binomial queue. After LK.*

Author: PEB

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Entry modified 26 May 2011.

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Cite this as:

Paul E. Black, "binomial heap", in
*Dictionary of Algorithms and Data Structures* [online], Paul E. Black, ed. 26 May 2011. (accessed TODAY)
Available from: https://www.nist.gov/dads/HTML/binomialheap.html