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Discover LudwigThe phrase "a variations" is not correct in written English
The correct form would be "a variation" or "variations" without the article "a" if plural. Example: "The artist presented a variation of the original design that was quite innovative."
Exact(16)
The tax cut package is a variations of ideas already proposed by Ukip and the Liberal Democrats, but left Labour gasping at "the audacity of David Cameron offering himself as custodian of public finances, and the provider of such unfounded tax cuts".
(a) Variations with the permeability exponent, ω.
Figure 1 (a) Variations of appearance due to different clothes in the same action.
Fig. 3 (a) Variations in teleseismic misfit as a function of rupture front velocity (V i ).
(a) Variations in the domain switching current as a function of the peak voltage and test time.
a Variations in the northward (X), eastward (Y), and downward (Z) components of the magnetic field in geomagnetic coordinates.
Similar(40)
The optimal DFA model successfully described Chl-a variations (coefficient of efficiency = 0.969) in the Kaoping River Estuary.
"A variation on beauty".
Later, a variation evolved.
Now consider a variation.
I heard a variation last week.
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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