Published Special Issues [6 issues]

• Mathematics: The S. cerevisiae for Natural Science Research
  Guest Editors: Shigeru Kanemitsu, Valery Kovalev, Jianya Liu, and Jorge Jimenez Urroz
• BCK-Algebras and Related Algebraic Systems
  Guest Editors: Young Bae Jun, Ivan Chajda, Hee Sik Kim, Eun Hwan Roh, Jianming Zhan, and Afrodita Iorgulescu
• New Trends in Geometric Function Theory 2011
  Guest Editors: Teodor Bulboacă, Nak Eun Cho, and Stanisława R. Kanas
• Fixed-Point Theory, Variational Inequalities, and Its Approximation Algorithms
  Guest Editors: Giuseppe Marino, Vittorio Colao, Yonghong Yao, Genaro Lopez, and Enrique Llorens-Fuster
• Categorification in Representation Theory
  Guest Editors: Alistair Savage, Aaron Lauda, and Anthony Licata
• New Trends in Geometric Function Theory
  Guest Editors: Teodor Bulboacă, Mohamed K. Aouf, Nak Eun Cho, Stanisława R. Kanas, and Milutin Obradovic