I have done some work and want to upload that research work on Arxiv. The problem is that the second author wants to work more on this and doesn't want to upload the result to Arxiv. I am thinking that I will upload the result on Arxiv and then I will keep doing research on that thing, so if get more results, then along with the second author I will submit the result to a conference.
Question: Suppose I upload an article on Arxiv as a single author and after that I work on the same problem and get some results. Will it be possible to submit again the additional result with two authors on Arxiv and to a conference? Is there any problem with the process I have described above?