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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
this the proof
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "this the proof" is not correct in standard written English.
It appears to be a truncated version of a more complete thought, possibly intending to say "this is the proof." Example: "After reviewing the evidence, I can confidently say that this is the proof we need to support our case."
⚠ May contain grammatical issues
Science
News & Media
Encyclopedias
Alternative expressions(4)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
9 human-written examples
This, the "proof of the seize quartiers," was the reason Frederick the Great of Prussia, though professing the views of the Enlightenment in the Age of Reason, diligently scrutinized his courtiers' quarterings.
Encyclopedias
From this, the proof of Lemma 3.1 follows.
With this, the proof of Theorem 1 is completed.
Science
After this, the proof runs along the same lines as that of Theorem 2.1.
Because of this, the proof of the main result is incorrect.
In order to overcome this, the proof is complicated than that in [11].
Human-verified similar examples from authoritative sources
Similar Expressions
50 human-written examples
This completes the proof this theorem.
This completes the proof of this corollary.
This completes the proof of this proposition.
This finishes the proof of this lemma.
Science
This concludes the proof of this lemma.
Expert writing Tips
Best practice
Always ensure correct grammatical structure by including necessary verbs. In this case, use "this is the proof" or rephrase for better clarity.
Common error
Avoid omitting the verb "is" or another appropriate verb when using "this" to present evidence. Incomplete phrases can reduce clarity and professionalism.
Source & Trust
78%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "this the proof" attempts to function as a statement presenting evidence. However, due to the missing verb, it fails to do so effectively. As Ludwig AI states, the phrase is not correct in standard written English.
Frequent in
Science
33%
News & Media
33%
Encyclopedias
33%
Less common in
Formal & Business
0%
Reference
0%
Wiki
0%
Ludwig's WRAP-UP
The phrase "this the proof" is grammatically incorrect due to the omission of the verb "is". Ludwig AI confirms that it does not conform to standard written English. Although examples exist across diverse fields like science, news, and encyclopedias, these occurrences do not validate the phrase's correctness. For accurate communication, always use "this is the proof" or rephrase using alternatives such as "this demonstrates the proof" to ensure clarity and grammatical accuracy. Failing to do so will decrease clarity and professionalism.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
this is the proof
Adds the missing verb "is" to create a grammatically correct sentence.
this constitutes the proof
Replaces "is" with "constitutes", offering a more formal tone.
this demonstrates the proof
Uses "demonstrates" instead of "is", highlighting the act of showing evidence.
this provides the proof
Employs "provides" to emphasize the action of offering evidence.
this confirms the proof
Utilizes "confirms" to suggest that the proof validates something.
this validates the proof
Replaces "is" with "validates", focusing on the establishment of validity.
here is the proof
Changes "this" to "here" for a slightly different emphasis on location or presentation.
this evidence proves
Switches "proof" to a verb and changes the sentence structure
the evidence indicates
Uses "indicates" to soften the claim of proof, suggesting a tendency.
the results demonstrate
Shifts the focus to "results" and uses "demonstrate" to show evidence.
FAQs
What is the correct way to say "this the proof"?
The grammatically correct way to express this idea is "this is the proof". Adding the verb "is" makes the sentence complete and understandable.
Are there alternatives to saying "this is the proof"?
Yes, you can use alternatives like "this demonstrates the proof", "this provides the proof", or "this confirms the proof" depending on the context.
What does "this is the proof" mean?
It means that what is being presented serves as evidence or confirmation of a particular claim or statement. It indicates that something has been substantiated or verified.
How can I use "this is the proof" in a sentence?
You can use it to introduce evidence or support for an argument. For example, "The data clearly shows a correlation; this is the proof that our hypothesis is correct."
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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
78%
Authority and reliability
2.8/5
Expert rating
Real-world application tested