Used and loved by millions

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 quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

MitStanfordHarvardAustralian Nationa UniversityNanyangOxford

these proof

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "these proof" is not correct in English.
It should be "these proofs" if referring to multiple pieces of evidence or "this proof" if referring to a single piece. You can use the corrected phrase when discussing evidence or validation in various contexts, such as academic writing or legal discussions. Example: "These proofs demonstrate the validity of the theory we are proposing."

⚠ May contain grammatical issues

Science

Academia

News & Media

Human-verified examples from authoritative sources

Exact Expressions

16 human-written examples

I'm also interested in using these Proof Assistants to make this world a safer place.

These proof assistants advance daily the goal for which Principia was designed: to provide a comprehensive formalization of mathematics.

These proof of concept experiments give rise to possibilities to translate the transduction of neurofibromin to in vivo experiments with the goal of a restoring of lacking protein in all body cells.

Science & Research

Nature

These proof of concept experiments had established LBTs as useful components of LRET assays, but they had not yet been combined with fluorescent proteins as acceptors to investigate PPInts of full-length proteins or individual domains.

Science & Research

Nature

Sure enough, in these proof of principle experiments, the difference allowed them to determine when a strand of DNA was present or when two or more strands were stuck in the nanopore.

These proof procedures are defined for any conventional logic formulated as a collection of inference rules and show how any such logic can be extended to a dialectic argumentation system.

Show more...

Human-verified similar examples from authoritative sources

Similar Expressions

44 human-written examples

These proof-of-concept TFETs feature junctions obtained by Solid Phase Epitaxy Regrowth (SPER).

They will present these proof-of-concept attacks tomorrow at HotMobile 2010, a conference taking place in Annapolis, MD.

These proof-of-concept tests also helped validate the design methodology developed for proportioning aluminum shear-link enabled steel frames.

These proof-of-principle experiments demonstrate how different selection pressures can interact with genomic instability to impact tumor evolution.

These proof-of-concept experiments were performed with a high cell dose of 4 × 106 iPSC-Mac per single intra-pulmonary application.

Science & Research

Nature
Show more...

Expert writing Tips

Best practice

When referring to evidence, ensure you use the correct singular or plural form. Use "this proof" for a single piece of evidence or "these proofs" for multiple pieces.

Common error

Avoid using "these proof". Remember that "proof" is a countable noun and must agree in number. Use "this proof" for singular and "these proofs" for plural references.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

81%

Authority and reliability

2.8/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "these proof" functions as a determiner followed by a noun. However, it is grammatically incorrect, as the plural determiner "these" requires a plural noun. According to Ludwig AI, the phrase is not correct and requires a correction to "this proof" or "these proofs".

Expression frequency: Uncommon

Frequent in

Science

42%

Academia

25%

News & Media

16%

Less common in

Formal & Business

0%

Encyclopedias

0%

Wiki

0%

Ludwig's WRAP-UP

In summary, the phrase "these proof" is grammatically incorrect and should be avoided in formal writing. Ludwig AI suggests using "this proof" for singular references and "these proofs" for plural references. While the phrase appears in some sources, particularly in science and academia, its incorrect usage detracts from clarity and professionalism. Alternative phrases like "this evidence" or "these pieces of evidence" can provide more accurate and grammatically sound options. Always ensure subject-verb agreement and proper noun forms for clear and effective communication.

FAQs

What is the correct way to use "proof" in a sentence?

The word "proof" is a countable noun. For a single instance, use "this proof". For multiple instances, use "these proofs". For example, "this proof demonstrates the theorem" or "these proofs support the hypothesis".

Is it ever correct to say "these proof"?

No, "these proof" is grammatically incorrect. The correct forms are "this proof" (singular) and "these proofs" (plural).

What are some alternatives to the phrase "these proof"?

Since "these proof" is incorrect, alternatives include "this evidence", "these proofs", or "these pieces of evidence".

What's the difference between "these proof" and "these proofs"?

"These proof" is grammatically incorrect, while "these proofs" is the correct plural form of "proof", indicating multiple instances of evidence or validation.

ChatGPT power + Grammarly precisionChatGPT power + Grammarly precision
ChatGPT + Grammarly

Editing plus AI, all in one place.

Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.

Source & Trust

81%

Authority and reliability

2.8/5

Expert rating

Real-world application tested

Most frequent sentences: