"allow the existence of" is a valid phrase in written English.
You can use it when you are making a statement that suggests that something is permissible. For example, "The government should allow the existence of alternative forms of healthcare."
The constants of the universe indeed allow the existence of life as we know it.
If different laws or physical constants prevail in other bubble universes, the conditions may not allow the existence of life or intelligence, he explained.
They say that however you do the numbers, this could not have made the Earth hot enough to allow the existence of liquid water.
Physicists and cosmologists have long noted that the laws of physics seem remarkably well tuned to allow the existence of life, an idea known as the anthropic principle.
Private ownership in the media sector must be structured to allow the existence of a credible, independent, vibrant and high-quality Fourth Estate.
The heat balance on the surface of the growing particle is shown to allow the existence of two stable particle temperatures.
I wouldn't classify Dos Santos as a dictator; he respects some differences and allows the existence of other political parties.
However, the land and climate have changed throughout time, with each area of Java having particular topographic, vegetational, and climatic differences allowing the existence of different species.
The trial judge, Mrs Justice Nicola Davies, allowed the existence of the reward to go before the jury but not Massey's approach and rejected the claim it had the "flavour of a bribe".
England is a "cesspit" and breeding ground for fundamentalist Muslims, the Nobel laureate and political activist Wole Soyinka has said in an interview in which he also accused Britain of allowing the existence of "indoctrination schools".
The case of circumferentially non-uniform but axially uniform wall impedance, allows the existence of an axial wavenumber for each frequency and each eigenvalue or radial wavenumber.
