ding6 lei5定理
Jyutpingding6 lei5
Yaledihng léih
Definition
Theorem; a proposition or rule logically deduced from axioms and definitions.
neutralschool
How it's used
Used primarily in academic or mathematical contexts, this term carries a formal tone despite being a common noun. It is almost exclusively paired with specific names of mathematical principles, such as 畢氏定理 or 費馬最後定理. Outside of a classroom or scientific discussion, it is rarely used in casual conversation.
Measure word
tiu4條tìuhExamples
This theorem is very hard to prove.
Related words
Common mistake
Learners often confuse this with 定律, which refers to a scientific law or a principle governing natural phenomena. Remember that 定理 is for logical proofs in mathematics, whereas 定律 is for empirical observations in physics or science.
Grammar color guide
Noun
Verb
Adjective
Adverb
Pronoun
Classifier
Particle
Connector
Grammar guides
- QuestionsFrom yes or no questions to asking who, what, where, and when. The patterns you need to ask questions naturally in Cantonese.
- ClassifiersCantonese puts a classifier between a number and a noun, and a bare classifier on its own can mean the. Learn the common ones and how to use them.
- ComparisonsHow to say bigger than, the most, the same as, and not as good as. Cantonese uses 過 where Mandarin uses 比, and that catches a lot of learners out.
