Talk in Valedictory Session of NCETMMS-2015 by Linfan MAO

      Ladies and Gentlemen, Good Afternoon!

On the first, Please allow me congratulating to Calcutta Mathematical Society for organized this successful conference, and congratulating to the winner in this contest.

Please allow me to say some words to the winner first. It should be remembered that achievements only represent the past, not the future. It is only a shine point on your life road, not implies the terminal but  a new starting point. You should be worked ever hard on mathematics or mathematical sciences after then, and then you will be the winner in your whole life.

I would like also to say some words to Young Scholars in here. I believe a mathematician should be a philosopher, not just only calculating because the notion is the guide to action, and the mathematics itself is a philosophy. Certainly, a mathematician is solving mathematical problems in all his times. Why you research this problem, not that problem is not only dependent on your ability but also on your philosophy and values on the world. Your think it is important and you think it is valuable to do in your life.

In recent years, many young scholars asked me providing open problems to them. In fact, it is easy. There are many and many unsolved problems in mathematics and mathematical sciences today. However, to decide what to do is simple, to decide not to do what is a little different but more important. By a philosophical view, there are 5 guide lines for deciding whether a problem is valuable for you:

(1) valuable for solving a problem in a mathematical branch;

(2) valuable for developing a mathematical branch;

(3) valuable for developing the whole mathematics;

(4) valuable for developing science at a times;

(5) valuable for understanding the nature, beneficial to human progress.

In my opinion, the most important for a mathematician is not just solving an abstract problem with only self-interest but should contribute to all sciences and human beings. Along with your own research, you should look at more researches of other scientists in your or not in your subjects or fields, and then push forward the promotion and development for different sciences together. So, I think this National Conference on Emerging Trends in Mathematics and Mathematical Sciences coincide with the development pace of sciences. It is a valuable and important conference for all mathematicians.

Thanks for you attention! Thanks!

    毛林繁在印度“全国数学及数学科学发展趋势学术交流大会”闭幕式的讲话

  女士们、先生们，大家下午好！

  请允许我祝贺加尔各答数学会成功组织本次会议，祝贺论文比赛中的优胜者。.

   我首先想对比赛优胜者说几句话。需要记住的是，成绩代表的只不过是过去而不是未来，它不过是你人生路上的一个闪光点，并不意味终点而是新的起点。你应当从此加倍努力的学习数学或数学科学并为之奋斗，只有这样，你才会是你人生最终的胜利者。

  我也希望在此对年轻学者说几句话。我认为，每位数学家都应当是哲学家而不仅是去计算一些数值结果，因为思想是行动的指南而数学本身就属于哲学范畴。当然，数学家需要终其一生求解数学问题，这当中，为什么你选择这个问题而不是那个问题进行研究并不单纯取决于你的能力，同时取决于你的哲学观和价值观，是因为你认为这个问题重要，有价值。

这些年，总有一些青年学者想我索求研究问题，这是件很容易的事。实际上，现如今，数学及数学科学中存在越来越多没解决的问题。重要的，不是决定研究什么，那是简单的，而决定不研究什么与此不同，在科学研究中则更重要。有5个原则可以帮助你决定研究什么，以及不研究什么：

 (1) 问题本身对解决数学分支中某一个问题有价值；;

(2) 问题的解决对推动某一数学分支有价值；

(3) 问题的解决对推动整个数学发展有价值；;

(4) 问题的解决对推动某一时期科学发展有价值；;

(5) 问题的解决对认识自然和人类发展有价值。

在我看来，对数学家而言最重要的，绝不仅仅是去解决某一个抽象数学问题，在那里孤芳自赏，而应贡献于整个科学和人类。为此，这就要求自己进行研究的同时，需要跳出自己研究领域而多看一看其他科学家的研究及成果，进而推动不同科学分支间共同发展。我认为本次“全国数学及数学科学发展趋势学术交流大会”与科学这种发展趋势同步，对所以数学工作者而言是重要且有价值的。

谢谢大家！

[编者注释]印度加尔各答数学会(Calcutta Mathematical Society)成立于1908年，是有着百年老店声誉的学会，也正因为此，它成了代表印度整个数学界的数学会（印度全国及各帮后来均没有再成立数学会），这也是为什么它每年举办的数学会议都冠以“全国”二字的缘由。