Thank for you answer, but it doesn't work either. To recapitulate: 1. I have a LyX document using the "algorithm2e" module. 2. Each time, I add new algorithm float in my document, it's label is an increasing number (1 for the first algorithm, 2 for the second, etc.). 3. I want that this label includes first a "A": so the first algorithm should be label "A1", the second "A2", etc.
I have try to add the following LaTeX in the document preamble: \renewcommand{\thealgorithm}{A\arabic{algorithm}} \renewcommand{\thelyxalgorithm}{A\arabic{algorithm}}. Both time, LyX says the corresponding label is unknown ("thealgorithm" in the first case, and "thelyxalgorithm" in the second case). Is it possible that the "algorithm2e" package introduces a new command for the labeling? Thanks. Le 21/09/18 à 09:45, Steve Hnizdur a écrit : > > > On 20/09/18 22:12, Paul A. Rubin wrote: >> On 09/20/2018 10:14 AM, Pascal Francq (Mailing lists) wrote: >>> Hi, >>> I try to change the change the numbering schema of algorithms in the >>> form 'A1', 'A2', etc. >>> So I add the following command in the preamble of the document: >>> \renewcommand{\thealgorithm}{A\arabic{algorithm}} >>> But LyX says it "thealgorithm" is undefined. >>> Any one an idea? >>> Thanks in advance. >> Can you post a minimal example showing the current version of what you >> are trying to change, and then indicate in it somewhere "I want to >> change this piece here to A1" or whatever? >> >> Paul >> > > Hi > > Have a look in the "Code preview Pane" at the Preamble for a command > that looks like > > \newtheorem{thm}{\protect\theoremname} > > or > > \newtheorem{lyxalgorithm}{\protect\algorithmname} > > (the one you have will depend on the modules you have loaded in Document > Settings) > > In the first case you need to do > > \renewcommand{\thethm}{A\arabic{algorithm}} > > and the in the second > > \renewcommand{\thelyxalgorithm}{A\arabic{algorithm}}. > > Note in the first case many other environments will be affected since > they also use the "thm" counter eg Theorem, etc. > > Hope that helps -- Dr. Pascal Francq Belgium