Acknowledgements

We sincerely thank the following parties for their assistance on the initial phase of this project.

• CASIO and HP
• The Department of Mathematics and Statistics at Radford University

And we gratefully acknowledge the support of each of the following.

• Capital Normal University, China (Chinese)
• Cengage
• EBSCO Publishing
• Enago English Editing 英文校正
• High Beam Encyclopedia
• Suan Sunandha Rajabhat University (Bangkok, Thailand)
• The Chinese Academy of Sciences
• Universidad Diego Portales, Chile
• University of Hradec Králové, Czech Republic