#let fh(a) = $hat(#a)$
#let ft(a) = $tilde(#a)$
#let f2(a) = $sqrt(#a)$
#let fb(a) = $bold(#a)$
#let fbb(a) = $bb(#a)$
#let fca(a) = $cal(#a)$
#let g6 = $diff$
#let g8 = $infinity$
#let g0 = $nothing$
#let go = $circle.stroked.tiny$
#let g_ = $without$
#let gd = $dot$
#let gt = $times$
#let gU = $union.big$
#let gI = $sect.big$
#let gb = $subset$
#let gbeq = $subset.eq$
#let gbne = $subset.neq$
#let gbneq = $subset.neq$
#let gp = $supset$
#let gpeq = $supset.eq$
#let gpne = $supset.neq$
#let gpneq = $supset.neq$
#let gal = $angle.l$
#let gar = $angle.r$
#let gV = $nabla$
#let gdd = $dot.double$
#let gddd = $dot.triple$
#let gdddd = $dot.quad$
#let g1 = $tilde.op$
#let ka = $alpha$
#let kb = $beta$
#let kc = $chi$
#let kd = $delta$
#let ke = $epsilon.alt$
#let kee = $epsilon$
#let kf = $phi.alt$
#let kff = $phi$
#let kg = $gamma$
#let kh = $eta$
#let ki = $iota$
#let kk = $kappa$
#let kl = $lambda$
#let km = $mu$
#let kn = $nu$
#let ko = $omicron$
#let kp = $pi$
#let kq = $theta$
#let kr = $rho$
#let ks = $sigma$
#let kt = $tau$
#let ku = $upsilon$
#let kv = $sigma.alt$
#let kw = $omega$
#let kx = $xi$
#let ky = $psi$
#let kz = $zeta$
#let kD = $Delta$
#let kG = $Gamma$
#let kL = $Lambda$
#let kX = $Xi$
#let kS = $Sigma$
#let kU = $Upsilon$
#let kF = $Phi$
#let kW = $Omega$
#let partial = $diff$
#let infty = $infinity$
#let circ = $circle.stroked.tiny$
#let setminus = $without$
#let cdot = $dot.op$
#let bigcup = $union.big$
#let bigcap = $sect.big$
#let prod = $product$
#let to = $arrow.r$
#let implies = $arrow.r.double$
#let gets = $arrow.l$
#let iff = $arrow.l.r.double.long$
#let cdots = $dots.h.c$
#let vdots = $dots.v$
#let ddots = $dots.down$
#let int = $integral$
#let iint = $integral.double$
#let iiint = $integral.triple$
#let oint = $integral.cont$
#let sim = $tilde.op$
#let ne = $eq.not$
#let ar = (
	l: $arrow.l$,
	r: $arrow.r$,
	t: $arrow.t$,
	b: $arrow.b$,
	lr: $arrow.r.long$,
	ll: $arrow.l.long$,
	llr: $arrow.l.r.long$,
	dl: $arrow.l.double$,
	dr: $arrow.r.double$,
	dlr: $arrow.l.r.double$,
	dt: $arrow.t.double$,
	db: $arrow.b.double$,
	ldl: $arrow.l.long.double$,
	ldr: $arrow.r.long.double$,
	ldlr: $arrow.l.r.long.double$,
)
