Differences
This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revisionLast revisionBoth sides next revision | ||
tutorial:apps_matroid [2016/01/08 14:21] – matroid property POINTS was renamed to VECTORS oroehrig | user_guide:tutorials:apps_matroid [2019/01/25 09:38] – ↷ Page moved from user_guide:apps_matroid to user_guide:tutorials:apps_matroid oroehrig | ||
---|---|---|---|
Line 1: | Line 1: | ||
- | ====== Short Introduction to New Application | + | ====== Short Introduction to application |
- | The application '' | + | **This tutorial is also available |
- | To make '' | + | This tutorial is meant to show the main features for handling matroids available. |
+ | < | ||
+ | > application " | ||
+ | </ | ||
+ | from within the '' | ||
===== Constructing a Simple Matroid and Playing Around ===== | ===== Constructing a Simple Matroid and Playing Around ===== | ||
Line 24: | Line 28: | ||
3 4 3 | 3 4 3 | ||
</ | </ | ||
- | {{ :tutorial: | + | {{ user_guide: |
The '' | The '' | ||
Line 49: | Line 53: | ||
You can also compute other properties, like | You can also compute other properties, like | ||
< | < | ||
- | matroid > print $M-> | + | matroid > print $M-> |
+ | matroid (2)> | ||
+ | matroid (3)> | ||
+ | matroid (4)> | ||
1 1 0 0 | 1 1 0 0 | ||
Line 62: | Line 69: | ||
Even the lattice of flats could be computed and visualised. | Even the lattice of flats could be computed and visualised. | ||
< | < | ||
- | matroid > $lattice=$M-> | + | matroid > $lattice=$M-> |
+ | matroid > foreach (@{$lattice-> | ||
{0 2} {0 1 3} {1 2} {2 3} | {0 2} {0 1 3} {1 2} {2 3} | ||
Line 109: | Line 117: | ||
It is also possible to derive a new matroid from others. | It is also possible to derive a new matroid from others. | ||
< | < | ||
- | matroid > $se=series_extension(uniform_matroid(2, | + | matroid > # The arguments are two matroids and for each matroid a basepoint. The basepoints will be identified. |
+ | matroid > $se=series_extension(uniform_matroid(2, | ||
matroid > print deletion($se, | matroid > print deletion($se, |