Speakur

Word Pronunciation & Dictionary

direct sum

Word Rarity Uncommon

Frequency: Zipf frequency 4.24 in modern English

Syllables
di-rec-t -sum
IPA
14
Scrabble Score
9
Letters
4
Syllables
9
Unique Chars

Meaning

noun

coproduct in some categories, like abelian groups, topological spaces or modules

noun

A linear sum in which the intersection of the summands has dimension zero. Equivalently, a linear sum of two subspaces, any vector of which can be expressed uniquely as a sum of two vectors: one vector belonging to the first subspace, and the other vector belonging to the second subspace.

noun

A block diagonal matrix interpreted as having its non-zero blocks (which are square matrices) as summands.

Inflected Forms

direct sums (plural)

Questions

What does direct sum mean?
coproduct in some categories, like abelian groups, topological spaces or modules

How to pronounce direct sum

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