I have seen some texts where it is used "exist" on affirmative sentences. I knew that for affirmative sentences with he/she/it, it must be used S at the end of the verb. For example, a sentence ...

2017年8月9日 · Exist or Exists is a matter of past, present, and future with indirect context. Past: The file was not found. Did it ever exist? It never existed. Has been (existing) is a reference to previously existed and currently exists. Comparing the creation and modification time stamp indicates the file existed without change, for 17 days.

2016年1月2日 · The right form is: The file doeSn't exist. Gramatical explanation: always when you're forming a positive sentence about a 3rd person (singular only) in present simple tense, you have to add the letter s to the verb which describeS what he doeS.

2019年10月7日 · "Machine Learning: A Probabilistic Perspective by Kevin Patrick Murphy" in page 31 says iff there exist function g and h such that p(x, y|z) = g(x, z)h(y, z) ... I guess exist here should be

2015年1月16日 · Exists and exist follow the ordinary convention for verbs: one is singular and the other is plural. Where mathematical usage differs from ordinary usage is in the way singular and plural are indicated in the subject that follows, and an implied “for all” later if the subject is plural. Exists is singular:

"something exists" is correct. "Ain't no such thing" is common in spoken English, but "Ain't" is not in Standard English. (Also, this use of a double negative is incorrect per Standard English.) "That exists" and "That does not exist" are Standard English, if the implied subject is singular. The plural forms are "Those exist" and "Those do not ...

2022年10月25日 · There are no conditions to it. You could use either of it. In the practical world, psychologically(But I haven't any proves neither there are survey or tests on it), you could use "There exists a number and two distinct elements" to make it look singular. (even though it's not).

2016年5月23日 · I don't know if there is a principled explanation for why. English works more by customary phrases than by rules, so there might not be a rule here. In mathematics, does there exist does not sound as clumsy, because there exists is a very common phrase in mathematics. Does there exist a greatest prime number? [Ordinary and clear in mathematics.]

2015年10月20日 · Things that exist currently or don't exist currently are subject to change. But once something exists and will continue to exist, we don't say "currently". There are currently 50 states. With Puerto Rico, it could be 51. Yes. The United States is …

2019年2月17日 · Both existing and existent could be used with something that exists, to refer to the state of existing (or existence). However, existent would evoke the sense of existence which is related to philosophy and life in general.