The last step of adding attachments is to add attachments, and upload the first converted paper PDF document as an attachment. It should be noted that only one attachment can be added, otherwise the system will think that there are many papers to be submitted.

Papers only accept PDF format, and the last uploaded paper shall prevail for multiple uploads. If the paper is uploaded successfully, the file size will be displayed. Please judge whether the upload of the paper is complete according to the size. Four-page process management (beginning, mid-term, comments, etc. ) There is no need to upload. When uploading a file, although it is said that a pdf file can also be uploaded, if the pdf file is generated by latex, the review will fail and a latex source file needs to be uploaded. ArXiv doesn't support word files, so you need to convert word into PDF files before entering.