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Both sides previous revision Previous revision Next revision | Previous revision Next revisionBoth sides next revision | ||
tutorial:apps_matroid [2017/05/19 16:27] – inserted application switch and replaced nodes_of_dim by nodes_of_rank oroehrig | user_guide:apps_matroid [2019/01/25 09:27] – ↷ Page moved from tutorial:apps_matroid to user_guide:apps_matroid oroehrig | ||
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- | ====== 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 " | > application " | ||
</ | </ | ||
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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 65: | 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 112: | 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, |