The OA Journal of Mathematical Research is an Open Access journal. To publish in OA Journal of Mathematical Research, authors are required to pay an article processing charge (APC) of 400 USD. Apart from these Article Processing Charges, there are no submission charges, page charges, or color charges. The APC, payable when your manuscript is editorially accepted, and before publication, is charged to either you, or your funder, institution, or employer. Invited articles are exempt from APC for three months from receipt of the invitation letter. However, if more than three months have passed since receipt of the invitation letter, authors need to pay 400 USD for APC.