Introduction to Numerical Methods for Variational Problems
暫譯: 變分問題的數值方法導論

前言 - 有限元素法的快速概述 - 透過全域函數進行函數近似 - 透過有限元素進行函數近似 - 使用全域元素的變分形式 - 使用有限元素的變分形式 - 時間相關的變分形式 - 偏微分方程系統的變分形式 - 非線性問題 - 線性系統的變分形式 - 有用的公式。

Hans Petter Langtangen (1962 - 2016) was a professor of computer science at the University of Oslo. He was formerly a professor of mechanics and was the Director of "Center for Biomedical Computing", a Norwegian Center of Excellence at the Simula Research Laboratory in Oslo. Langtangen has more than 100 scientific publications, including journal papers and many books, e.g., the bestseller TCSE 6 "A Primer on Scientific Programming with Python" (editions 1 - 5). He has also developed open source and commercial software systems for computational sciences."
Kent-Andre Mardal is a professor of mechanics at the University of Oslo and an adjunct research scientist at Simula Research Laboratory. He has published more than 80 scientific publications, including journal papers, one co-authored book and the co-edited the book about the FEniCS project, for which he was a core developer for many years.

漢斯·佩特·朗坦根（1962 - 2016）是奧斯陸大學的計算機科學教授。他曾是力學教授，並擔任奧斯陸Simula研究實驗室的「生物醫學計算中心」的主任，這是一個挪威的卓越中心。朗坦根擁有超過100篇科學出版物，包括期刊論文和多本書籍，例如暢銷書《TCSE 6：Python科學程式設計入門》（第1至5版）。他還為計算科學開發了開源和商業軟體系統。

肯特-安德烈·馬達爾是奧斯陸大學的力學教授，也是Simula研究實驗室的兼任研究科學家。他發表了超過80篇科學出版物，包括期刊論文、一部共同作者的書籍，以及共同編輯有關FEniCS專案的書籍，並且他是該專案的核心開發者多年。