xbeta
Formatting rules

Headings | Lists | Links | Rules | Mathematics | Categories

Headings

Headers in Markdown are denoted by leading hash marks. The number of hash marks determines the level of the header. Each page on this wiki begins with a level-one header containing the page title, therefore, headers within pages should begin at level two.

## Header ##
### Subheader ###
#### Subsubheader ####

Only the leading hash marks are required—the trailing ones are optional.

Lists

Unordered lists

Bulleted lists are denoted by leading asterisks, plus signs, or dashes (*, +, or -). Nested lists are indented with two spaces:

* Outer item one
* Outer item two

  + Nested item one
  + Nested item two

    - Third level

* Outer item three
  • Outer item one

  • Outer item two

    • Nested item one

    • Nested item two

      • Third level
  • Outer item three

Here we have used different list markers, but any list marker can be used for any level.

Ordered lists

Numbered ordered lists are denoted by leading numbers followed by a period:

1. First item
2. Second item
  1. First item
  2. Second item

In practice, the actual numerical values are insignificant and lists can just as easily be writen with all zeros.

  • Internal links: [[Normal distribution]] yields Normal distribution.

  • Aliased internal links: [[Normal distribution|Gaussian noise]] yields Gaussian noise.

  • External links: [xbeta](http://xbeta.org/) yields xbeta.

Rules

Horizontal rules are produced by three or more asterisks or hyphens, possibly separated by spaces, on a line by themselves. Examples of valid rules include:

---

- - - -

***********************************

Mathematics

The syntax for entering mathematics on the wiki is almost identical to that of standard AMSLaTeX.

  • To enter inline math, surround statements by dollar signs:

    Let $\varepsilon \gt 0$.  If for any $x$ there exists a
    $\delta \gt 0$ such that ...

    Let ε>0. If for any x there exists a δ>0 such that …

  • To enter display mode (unnumbered) equations:

    $$ \Pr(a \vert x, \theta) = \sum_{o \in \mathcal{O}} \Biggl\lbrace
      \int \chi \Bigl[ \alpha(u(x,\varepsilon,\theta),o) = a \Bigr]\,
         dG(\varepsilon) \Biggr\rbrace
      \mu(o \vert x, \theta) $$
    Pr(ax,θ)= o𝒪{χ[α(u(x,ε,θ),o)=a]dG(ε)}μ(ox,θ)\Pr(a \vert x, \theta) = \sum_{o \in \mathcal{O}} \Biggl\lbrace \int \chi \Bigl[ \alpha(u(x,\varepsilon,\theta),o) = a \Bigr]\,dG(\varepsilon) \Biggr\rbrace \mu(o \vert x, \theta)
  • Numbered labeled displayed equations with references:

    \[
    \label{reference}
    q_a(z) = \sigma_a^{-1} \exp\left[-\frac{\gamma + z}{\sigma_a}\right]
    \]
    Referring back to (eq:reference), or \eqref{reference}.
    (1)q a(z)=σ a 1exp[γ+zσ a]q_a(z) = \sigma_a^{-1} \exp\left[-\frac{\gamma + z}{\sigma_a}\right]

    Referring back to (1), or (1).

  • Note that the symbols < and > are not available, as in standard LaTeX. Use \lt and \gt instead.

See itex help area or the official list of itex commands for a comprehensive list of supported math commands. There is also a syntax for theorems, definitions, etc. much like those provided by the amsthm LaTeX package. See instiki:Theorems for details.

Categories

All Pages and Recently Revised can display all pages on the wiki, or only those pages that belong to a particular category. For example, here is a list of all pages in Help category

To add categories to a page, add a line like the following to the bottom of the page:

category: Statistics, Economics

It is customary to put the categories line at the bottom of the page (as you can see on this page). In order to make the categories invisible, use:

:category: InvisibleCategory

category: Help