西格瑪數學論壇是領先的專業數學期刊的開放獲取替代品。編輯決策由專注于以下領域的編輯群體做出:數學基礎、離散數學、代數、數論、代數和復雜幾何、微分幾何和幾何分析、拓撲、分析、概率、微分方程、計算數學、應用分析、數學物理和理論計算機科學。這種分類的存在是為了幫助同行評審過程。不完全屬于這些類別的捐款仍然受到歡迎。

Forum of Mathematics, Sigma is the open access alternative to the leading specialist mathematics journals. Editorial decisions are made by dedicated clusters of editors concentrated in the following areas: foundations of mathematics, discrete mathematics, algebra, number theory, algebraic and complex geometry, differential geometry and geometric analysis, topology, analysis, probability, differential equations, computational mathematics, applied analysis, mathematical physics, and theoretical computer science. This classification exists to aid the peer review process. Contributions which do not neatly fit within these categories are still welcome.