%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%  mathmemo.sty                                            %%%%%%
%%%%%%                                                          %%%%%%
%%%%%%  Style file for short notes / discussion summaries.      %%%%%%
%%%%%%  D. Anderson                                             %%%%%%
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\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{mathmemo}[2026/05/18 v0.1 Notes and short reports]

%%%%%%%%%% Core packages %%%%%%%%%%
\RequirePackage{amsmath,amssymb,amsthm,euscript,mathrsfs,bm}
\RequirePackage{dsfont}            % for \mathds
\RequirePackage[shortlabels]{enumitem}
\RequirePackage{tikz-cd}
\RequirePackage{setspace}

%%%%%%%%%% Fonts %%%%%%%%%%
% Palatino-based: blander than ebgaramond, clearly distinct from your paper style.
\RequirePackage{newpxtext}
\RequirePackage{newpxmath}

\setstretch{1.15}

%%%%%%%%%% Page geometry %%%%%%%%%%
\RequirePackage[margin=1in,headheight=15pt,headsep=12pt]{geometry}

%%%%%%%%%% Header / footer %%%%%%%%%%
\RequirePackage{fancyhdr}

% A short running title and date can be set by the document.
\providecommand{\memotitle}{}
\providecommand{\memodate}{\today}

\pagestyle{fancy}
\fancyhf{}
\fancyhead[L]{\small\itshape\memodate}
\fancyhead[C]{\small\scshape\memotitle}
\fancyhead[R]{\small\thepage}
\renewcommand{\headrulewidth}{0.4pt}
\renewcommand{\footrulewidth}{0pt}

% Plain pagestyle (used by \maketitle and section openings):
% keep the same running header as \fancy so the title page shows it too.
\fancypagestyle{plain}{%
  \fancyhf{}%
  \fancyhead[L]{\small\itshape\memodate}%
  \fancyhead[C]{\small\scshape\memotitle}%
  \fancyhead[R]{\small\thepage}%
  \renewcommand{\headrulewidth}{0.4pt}%
  \renewcommand{\footrulewidth}{0pt}%
}

% amsart's \maketitle internally issues \thispagestyle{empty}, which blanks
% the title page header. Patch \maketitle so that after it runs we restore
% the fancy header on the title page.
\let\mathmemo@oldmaketitle\maketitle
\renewcommand{\maketitle}{%
  \mathmemo@oldmaketitle%
  \thispagestyle{fancy}%
}

%%%%%%%%%% Hyperref (load late) %%%%%%%%%%
\RequirePackage[colorlinks=true,linkcolor=black,citecolor=black,urlcolor=blue!50!black]{hyperref}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%  Macros                                                  %%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

% Blackboard bold (via \mathds, matching your paper setup)
\newcommand{\C}{\mathds{C}}
\newcommand{\N}{\mathds{N}}
\newcommand{\Q}{\mathds{Q}}
\newcommand{\R}{\mathds{R}}
\newcommand{\Z}{\mathds{Z}}
\renewcommand{\P}{\mathds{P}}
\newcommand{\A}{\mathds{A}}
\newcommand{\G}{\mathds{G}}
\newcommand{\B}{\mathds{B}}
\newcommand{\E}{\mathds{E}}
\newcommand{\bV}{\mathds{V}}
\newcommand{\bX}{\mathds{X}}

% Calligraphic
\renewcommand{\O}{\mathcal{O}}
\newcommand{\cL}{\mathcal{L}}
\newcommand{\cM}{\mathcal{M}}
\newcommand{\cF}{\mathcal{F}}
\newcommand{\cE}{\mathcal{E}}
\newcommand{\cH}{\mathcal{H}}

% Fraktur
\newcommand{\lieg}{\mathfrak{g}}
\newcommand{\liep}{\mathfrak{p}}
\newcommand{\lieb}{\mathfrak{b}}
\newcommand{\lien}{\mathfrak{n}}
\newcommand{\liet}{\mathfrak{t}}
\newcommand{\lieh}{\mathfrak{h}}
\newcommand{\liem}{\mathfrak{m}}

% Shorthands
\newcommand{\id}{\mathrm{id}}
\newcommand{\pt}{\mathrm{pt}}
\newcommand{\ee}{\mathrm{e}}
\newcommand{\on}{\operatorname}
\newcommand{\del}{\partial}
\newcommand{\tto}{\twoheadrightarrow}
\newcommand{\isom}{\cong}
\newcommand{\ul}{\underline}
\newcommand{\exterior}{\textstyle\bigwedge}

\renewcommand{\setminus}{\smallsetminus}
\renewcommand{\phi}{\varphi}
\renewcommand{\tilde}{\widetilde}
\renewcommand{\hat}{\widehat}
\renewcommand{\bar}{\overline}

% Common Lie-theory / flag-variety operators
\newcommand{\Gr}{\mathit{Gr}}
\newcommand{\Fl}{\mathit{Fl}}

% Math operators
\DeclareMathOperator{\Sym}{Sym}
\DeclareMathOperator{\codim}{codim}
\DeclareMathOperator{\rk}{rk}
\DeclareMathOperator{\diag}{diag}
\DeclareMathOperator{\Lie}{Lie}
\DeclareMathOperator{\im}{im}
\DeclareMathOperator{\tr}{tr}
\DeclareMathOperator{\gr}{gr}
\DeclareMathOperator{\Aut}{Aut}
\DeclareMathOperator{\End}{End}
\DeclareMathOperator{\Hom}{Hom}
\DeclareMathOperator{\ord}{ord}
\DeclareMathOperator{\Pic}{Pic}
\DeclareMathOperator{\Proj}{Proj}
\DeclareMathOperator{\Spec}{Spec}
\DeclareMathOperator{\Span}{Span}
\DeclareMathOperator{\Bl}{Bl}
\DeclareMathOperator{\ev}{ev}
\DeclareMathOperator{\Supp}{Supp}
\DeclareMathOperator{\Ext}{Ext}
\DeclareMathOperator{\Tor}{Tor}
\DeclareMathOperator{\Coh}{Coh}
\DeclareMathOperator{\Sing}{Sing}

% Comments / excise (handy for drafts)
\newcommand{\comment}{\marginpar}
\newcommand{\excise}[1]{}

%%%%%%%%%% Theorem environments (small-caps, matching your style) %%%%%%%%%%
\newtheoremstyle{scthm}%
{}{}{\itshape}{}{\scshape}{.}{ }{}
\newtheoremstyle{scdef}%
{}{}{}{}{\scshape}{.}{ }{}

\theoremstyle{scthm}
\newtheorem{theorem}{Theorem}[section]
\newtheorem{lemma}[theorem]{Lemma}
\newtheorem{proposition}[theorem]{Proposition}
\newtheorem{corollary}[theorem]{Corollary}
\newtheorem{conjecture}[theorem]{Conjecture}

\theoremstyle{scdef}
\newtheorem{definition}[theorem]{Definition}
\newtheorem{remark}[theorem]{Remark}
\newtheorem{example}[theorem]{Example}
\newtheorem{question}[theorem]{Question}
\newtheorem{notation}[theorem]{Notation}

\endinput