The existence check is done by using the standard InChikey which has a unique constraint in the database.
It's pretty much perfect, if only for Helms' entire existence (check the photo below for an example).
From what nights on Earth would be like to how human life might have never come to existence, just check out the video and prepare to be amazed.
Perhaps the clearest evidence of this is how easy it is for a hotel maid to sweep away a traveler's existence after check out.
We study the complexity of problems related to irredundant equivalent subsets: verification, checking existence of an irredundant equivalent subset with a given size, checking necessary and possible presence of clauses in irredundant equivalent subsets, and uniqueness.
Completeness, existence and accuracy checks on NJR and RC data fields were performed using SPSS Statistics version 22.0 (IBM, Armonk, New York) with common commands and syntax programming methods.
Nevertheless in the eternal scheme of the universe, its existence serves to check the undue increase of small birds and to prevent the propagation of unfitness and disease among them".
The existence of the check came to light after a clerical error listed it in a public filing as a donation from WBAL, a local TV station owned by the Hearst Corporation.
(2.7) We can also check existence of such solutions numerically; see Section 5.
Checking existence of flatlines, outliers or single spectra with remarkable peaks differing from the other spectra was done, taking into account that mass deviation within the spectra set should be less than 500 ppm.
