A short paper on arXiv I have a short paper that I wish to upload to arXiv. 
It is about two pages, on mathematical application of previous construction (a math paper).

Actually, I intend to add to it another segment in the future. 

Is there is a real possibility that it will be rejected because of its length? 

Thanks.
Is there is a real possibility that it will be rejected because of its length? 


No: Length is irrelevant, quality counts. A two page paper could be better than a twenty-two page paper.