'subtle proof' is correct and usable in written English.
You can use it when you need to allude to evidence or proof which is not immediately obvious. For example, "The subtle proof of their guilt was hidden in the small details the police overlooked."
Which was better, Larry Bryggman's understated performance in "Proof" or Michael Hayden's equally subtle work in "Judgment at Nuremberg"?
1/2 12 Years Old 86 Proof Subtle, complex and smooth, with lovely citrus, caramel, dried fruit and salt flavors.
Now there is Square One Organic Cucumber Flavored Vodka, subtle and delicate, 80 proof and superb right from the freezer, or on the rocks with a cucumber spear or slice as garnish.
The proof uses subtle analysis of combinations of related super- and sub-level sets employing the coarea formula and the relative isoperimetric inequality.
It's proof that subtle animation improvements and a few tight pacing edits, among other things, can have amazing effects.
A commenter on that blog post, known only as "vloodin," noted that there was a "single error on a subtle point" in the proof; other mathematicians have since chimed in and confirmed vloodin's initial analysis, and so the emerging consensus among many mathematicians is that a solve for P vs. NP remains elusive.
Mr. Rahim, one of France's finest young actors (see "A Prophet" if you need further proof), is both subtle and magnetic.
BEST VALUE Plymouth English Gin $22 *** 1/282.44 proof 1 liter Subtle and elegant with crisp, lingering flavors of citrus and juniper: a martini in a dinner jacket.
Both laws, he said, reflected the recognition "that in a complex society, not all discrimination is apparent or overt" but will often be "subtle and concealed," lacking overt proof of a discriminatory motivation.
This is a powerful move because it is a subtle way of showing social proof and popularity.
