Jisho.org: Japanese Dictionary

関係代数 (数学)

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Wikipedia definition

1. Relation algebraIn mathematics and abstract algebra, a relation algebra is a residuated Boolean algebra expanded with an involution called converse, a unary operation. The motivating example of a relation algebra is the algebra 2 of all binary relations on a set X, that is, subsets of the cartesian square X, with R•S interpreted as the usual composition of binary relations R and S, and with the converse of R interpreted as the inverse relation.
Read “Relation algebra” on English Wikipedia
Read “関係代数 (数学)” on Japanese Wikipedia
Read “Relation algebra” on DBpedia

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Kanji in this word

0.4071098833193995

14 strokes. JLPT N3. Jōyō kanji, taught in grade 4.

関

connection, barrier, gateway, involve, concerning

Kun: せき、 -ぜき、かか.わる、からくり、かんぬき

On: カン

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1.0119588528225074

9 strokes. JLPT N3. Jōyō kanji, taught in grade 3.

係

person in charge, connection, duty, concern oneself

Kun: かか.る、かかり、 -がかり、かか.わる

On: ケイ

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0.43182726909236313

5 strokes. JLPT N4. Jōyō kanji, taught in grade 3.

代

substitute, change, convert, replace, period, age, counter for decades of ages, eras, etc., generation, charge, rate, fee

Kun: か.わる、かわ.る、かわ.り、か.わり、 -がわ.り、 -が.わり、か.える、よ、しろ

On: ダイ、タイ

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0.43037330522336525

13 strokes. JLPT N3. Jōyō kanji, taught in grade 2.

数

number, strength, fate, law, figures

Kun: かず、かぞ.える、しばしば、せ.める、わずらわ.しい

On: スウ、ス、サク、ソク、シュ

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0.1831994474937298

8 strokes. JLPT N5. Jōyō kanji, taught in grade 1.

学

study, learning, science

Kun: まな.ぶ

On: ガク

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