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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
ls that true
Grammar usage guide and real-world examplesUSAGE SUMMARY
Science
News & Media
Alternative expressions(5)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
60 human-written examples
The set of all the sentences of L that are true in the L-structure A is called the complete theory of A, in symbols Th(A).
Science
Is that true?
News & Media
Is that true?Yes.
News & Media
Is that true, though?
News & Media
Is that true, really?
Wiki
The kind of knowledge they acquire about specific sentences based on empirical procedures thus assumes the form, "Sentence S is analytic-in-L", when that is true of sentence S, which is a posteriori.
Science
A formula of a language L is logically true, or valid, if it is true under any interpretation of L, and a set of formulas entails a given formula if the latter is true under any interpretation of L that makes the members of the former true.
Science
Tarski showed us how the actual world induces a partition of sentences of L into those that are true and those that are false.
Science
Indeed, it follows from the truth condition for the assertion "normally (or c.p). L" in ranked world model (where L is e.g., Y = f(X)) that there exists a proposition N namely the set of all worlds with rank 0 such that "normally L" is true in the given ranked model iff the material implication N→L is true in all worlds of this model.
Science
Concerning MFC, the Barcan formula and its converse are both L-true, that is ⊨(∀x)□Fx↔□(∀x Fx.
Science
Since fτ(i) = f(i - l) is true, we could conclude that the feature vector has been circularly shifted.
Expert writing Tips
Best practice
When seeking confirmation, ensure your tone is appropriate for the context. "Is that true?" can sometimes sound accusatory, so consider alternatives like "Is that correct?" in formal settings.
Common error
Avoid using "is that true" when a more neutral or polite phrasing would be better received. In situations where you're not questioning someone's honesty but simply seeking clarification, phrases like "Is that correct?" or "Can you confirm that?" are often more effective.
Source & Trust
79%
Authority and reliability
3.8/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "ls that true", assuming it's a typo for "is that true", is to form a question seeking confirmation or validation of a statement. The Ludwig AI states this is acceptable usage.
Frequent in
News & Media
33%
Science
33%
Formal & Business
33%
Less common in
News & Media
0%
Science
0%
Formal & Business
0%
Ludwig's WRAP-UP
The query "ls that true" is most likely a typo for the common question "is that true". Its purpose is to seek confirmation or validation of a statement. While simple, its tone can sometimes be perceived as confrontational, so it's crucial to consider the context and audience. According to Ludwig, the phrase is considered acceptable. Alternative phrasings such as "is that correct" or "are you sure about that", may be more appropriate in formal situations. Given the lack of specific examples for "ls that true", its true frequency cannot be determined.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
Is that correct?
This alternative uses "correct" instead of "true", focusing on accuracy or validity.
Is that right?
This alternative uses "right" instead of "true", implying accuracy or moral correctness.
Is that the truth?
This alternative adds emphasis by specifying "the truth", indicating a strong need for confirmation.
Are you sure about that?
This alternative focuses on the speaker's certainty regarding the information.
Is that really the case?
This alternative introduces a more formal tone using "the case".
Is that accurate?
This alternative uses "accurate" instead of "true", specifically asking about the precision of the information.
Can you confirm that?
This alternative asks for verification from the listener.
Is that a fact?
This alternative emphasizes the factual nature of the statement.
So, that's true?
This alternative adds a conversational element, expressing mild surprise or seeking clarification after a statement.
Would you say that's true?
This alternative uses a more polite and indirect approach, inviting the listener's opinion.
FAQs
What does "ls that true" mean?
"Ls that true" is likely a typographical error for "is that true", a question used to seek confirmation or verification of a statement.
What's a more formal way to ask "ls that true"?
In formal settings, you could use phrases like "is that correct" or "can you confirm that" to seek verification without sounding accusatory.
When is it appropriate to use "is that true"?
The phrase "is that true", assuming "ls that true" is a typo, is suitable when you genuinely need clarification or confirmation and the context is informal enough that a direct question won't be misinterpreted as challenging someone's honesty.
How can I rephrase "is that true" to be less confrontational?
To soften the tone, consider alternatives like "is that right", "are you sure about that", or "is that accurate". The best choice depends on the specific nuance you want to convey.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
79%
Authority and reliability
3.8/5
Expert rating
Real-world application tested