From c600b3c2a3cc4f7c66968cca9ce6589d0d878992 Mon Sep 17 00:00:00 2001 From: Andrew Mathas Date: Fri, 15 Jul 2016 19:21:02 +0200 Subject: [PATCH] Updating doc-string for A_oo --- src/sage/combinat/root_system/type_A_infinity.py | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/src/sage/combinat/root_system/type_A_infinity.py b/src/sage/combinat/root_system/type_A_infinity.py index 968867e0677..9fc9cdcfc1f 100644 --- a/src/sage/combinat/root_system/type_A_infinity.py +++ b/src/sage/combinat/root_system/type_A_infinity.py @@ -16,13 +16,15 @@ class CartanType(CartanType_standard, CartanType_simple): r""" - Define the Cartan type `A_oo`. + Define the Cartan type `A_{\infty}`. - In sage `oo` is the same as `+Infinity` so `NN` and `ZZ` are used to - differentiate between the `A_{+\infty}` and `A_{\infty}` root systems. + We use `NN` and `ZZ` to explicitly differentiate between the + `A_{+\infty}` and `A_{\infty}` root systems. While `oo` is + the same as `+Infinity` in Sage, it is used as an alias + for `ZZ`. """ # We do not inherit from CartanType_crystallographic because it provides - # methods that are not yet implemented. + # methods that are not implemented for A_oo. def __init__(self, index_set): """ EXAMPLES::