Group items tagged

4. Hence for “used in” tag and “proved by” tags, they may also be the tags of the type “Area of mathematics” “keywords” . Besides the view of Hierarchy (only for “Area of mathematics” as the folders view), and the view of “Tag clouds” (mostly for “keywords” and also for “Area of mathematics” ), there is a third view for “used in” tag and “proved by” tags, as “Road Map” view. For example, if we choose two tags, one as the “starting point” and another as the “ending point”, then the “Road Map” function will automatically give the graph structure to all related tags, give the road map from the “starting point” to the “ending point”. Of course, this task is tough for temporary, and might not be feasible. Since, we maynot determine very clearly the level of “use in”/”proved by” for every single page. For example, tag-1 is used in tag-2, and tag-2 is used in tag-3, so in tag-3 page, tag-1 might be included as the “used in” tag. If so, that might harm the structure of the automatically generating “Road Map”. But anyway, it is still possible to be solved if finer algorithm and finer page-management is considered.

2. Hence, it is able to separate “Area of mathematics” “keywords” as two disjoint set. The advantage is that, we are then able to give the tags of “Area of mathematics” “keywords” as different font colors in the Tag list page and other related applications, which is friendly to our eyes and intuitions . 3. I still donot have a good understanding for the “used in” tags, what is relation of “used in” tags with “Area of mathematics” “keywords”? And beside “used in” tags, why donot apply “proved by” tags. Of course, in theory, you can deduce the “proved by” tags from “used in” tags from the information of the whole site. But for single pages, “proved by” tags are still different from the “used in” tags. I have said that, give different font colors to “Area of mathematics” tags and “keywords” tags. So is that possible give some picture-property to the “proved by” tags and “used in” tags? 3. Tricki still donot support “Tags Clouds”. This is another view of how to organize tags besides hierarchical structure. For example, in the tag list, give the “Area of mathematics” tags and “keywords” tags the subscripts and superscript. The subscripts shows the number how many other tags are “used in” this tag. And the superscripts shows the number how many other tags are “proved by” this tag. When the user click the subscript/superscript, then they are lead to that corresponding tag list.

Tricki is still new to me. I would like suggest that, in “Post new comment”， under “Subject”, it is better to add another blank as “Tags”, which already have the existed tags for this page, and the authors for comment can add new tags when they “Post new comment”. Tags seems to have three type in Tricki, as “Area of mathematics” “Keywords” “Used in” For that, I suggest, 1. “Area of mathematics” can only be added and edited by the super members, and a) is supported by a hierarchical structure (like multi-level recursive nested folders) . Now the sub-tags is just listed in alphabet sequence. b) when “keywords” concide with “Area of mathematics”, then it is automatically regarded as “Area of mathematics”。 c) For building the hierarchical structure of “Area of mathematics”, it will be convenient, if automatically take the large names as the sub-tags of small name. For example, take “Prime Number Theorem” as the sub-tag of “Prime numbers” automatically， and regard “Fourier inversion formula” as the sub-tag of “Fourier analysis’ automatically, if they are both the type of “Area of mathematics”. Of course, keywords can be contributed by any members.

trick, that can be used in many mathematical situations. With such tricks, it is usually difficult, and in any case not desirable, to formalize them as lemmas: if you try to do so then almost certainly your formal lemma will not apply in all the situations where the trick does.

Of course, in many cases, the devil really is in the details, but nevertheless knowing the overall strategy of proof is extremely valuable when trying to read that proof.

Yong-Hui Says: November 3, 2008 at 5:57 pm | Reply I am in MSRI for the cofference discrete Rigity. Green will give the first lecture. I just happen to find a question for that tricki wiki: Whether is there a common-shared refference system for that tricki wiki? Similar to that of Mathscinet of ams math review It will be a basic instrument for a mathematical website.