Use LaTeX commands instead of Unicode characters

Author: user202729

src/sage/combinat/matrices/dancing_links.pyx

@@ -886,7 +886,7 @@ cdef class dancing_linksWrapper:
         Return the SAT solver solving an equivalent problem.
 
         Note that row index `i` in the dancing links solver corresponds to
-        the boolean variable index `ì+1` for the SAT solver to avoid
+        the boolean variable index `i+1` for the SAT solver to avoid
         the variable index `0`.
 
         See also :mod:`sage.sat.solvers.satsolver`.

src/sage/stats/distributions/discrete_gaussian_integer.pyx

@@ -8,7 +8,7 @@ r"""
 Discrete Gaussian Samplers over the Integers
 
 This class realizes oracles which returns integers proportionally to
-`\exp(-(x-c)^2/(2σ^2))`. All oracles are implemented using rejection sampling.
+`\exp(-(x-c)^2/(2\sigma^2))`. All oracles are implemented using rejection sampling.
 See :func:`DiscreteGaussianDistributionIntegerSampler.__init__` for which algorithms are
 available.
 
@@ -18,7 +18,7 @@ AUTHORS:
 
 EXAMPLES:
 
-We construct a sampler for the distribution `D_{3,c}` with width `σ=3` and center `c=0`::
+We construct a sampler for the distribution `D_{3,c}` with width `\sigma=3` and center `c=0`::
 
     sage: from sage.stats.distributions.discrete_gaussian_integer import DiscreteGaussianDistributionIntegerSampler
     sage: sigma = 3.0