Welcome to the website of CheonHyeong!
4.Links of Formulae
Sim CheonHyeong(2002/1/2 - ), Han, was born in Shanghai, China. The author of TH-Fonts
and its matching softwares, and TH-Formulae (For details, see below). The owner of the official QQ group "Unicode&Han Characters Communication Group" of yedict
On 2015/10/7, TH-Fonts V1.3.0 (The first version officially released) was available on yedict. In December of the same year, the production of ZiHaiLiangFenIME was completed. In December the next year, the version of TH-Fonts was made a major update, and from then on, it could successfully support all the characters in Unicode, and had been released in February, 2017. Also, the updation of the matching softwares like Input Method Engines was followed by. And the softwares are released on this site in April, 2018.
Two formulae "Formula for Octic Equations" and "Formula for Decic Equations" is contained in TH-Formulae. According to Abel-Ruffini Theorem, there is no radical solution for all the Octic Equations and Decic Equations; so TH-Formulae is only able to solve a part of these. For details, please see the Discriminant Rules.
In 2014, TH-Formulae was first released on baike.baidu.com, but the pages was cancelled after discovering the mistakes; in 2015, the pages was recovered by a netizen, however, the pictures all went wrong, and was not able to display correctly on the pages. From November, 2017 to December, 2017, the mistakes were corrected, and the Discriminant Rules were updated and simplified, while examples were added.
In February, 2020, the formulae were updated again, some new special forms of the equations and the corresponding examples were added.
Links of Formulae
Formula for Octic Equations
Formula for Decic Equations