Fix rendering2

README.md

@@ -1,4 +1,4 @@
-[![Python 3](http://img.shields.io/badge/python-3-blue.svg)](https://docs.python.org/3/)
+[![This project supports Python 3.10+](https://img.shields.io/badge/Python-3.10+-blue.svg)](https://python.org/downloads)
 [![pre-commit](https://img.shields.io/badge/pre--commit-enabled-brightgreen?logo=pre-commit&logoColor=white)](https://github.com/theochem/matrix-permanent/actions/workflows/pull_request.yml)
 [![GNU GPLv3](https://img.shields.io/badge/license-%20%20GNU%20GPLv3%20-green?style=plastic)](https://www.gnu.org/licenses/gpl-3.0.en.html)
 
@@ -37,9 +37,10 @@ Compute the permanent of a matrix using the best algorithm for the shape of the
 Compute the permanent of a matrix combinatorically.
 
 **Formula:**
-```math
+
+$$
 \text{per}(A) = \sum_{\sigma \in P(N,M)}{\prod_{i=1}^M{a_{i,{\sigma(i)}}}}
-```
+$$
 
 **Parameters:**
 
@@ -55,13 +56,13 @@ Compute the permanent of a matrix combinatorically.
 
 **Formula:**
 
-```math
+$$
 \text{per}(A) = \frac{1}{2^{N-1}} \cdot \sum_{\delta \in \left[\delta_1 = 1,~ \delta_2 \dots \delta_N=\pm1\right]}{
     \left(\sum_{k=1}^N{\delta_k}\right){\prod_{j=1}^N{\sum_{i=1}^N{\delta_i a_{i,j}}}}}
-```
+$$
 
 **Additional Information:**
-The original formula has been generalized here to work with $M$-by-$N$ rectangular permanents with
+The original formula has been generalized here to work with $M$ by $N$ rectangular permanents with
 $M \leq N$ by use of the following identity (shown here for $M \geq N$):
 
 ```math
@@ -70,14 +71,14 @@ $M \leq N$ by use of the following identity (shown here for $M \geq N$):
 
 This can be neatly fit into the original formula by extending the inner sums over $\delta$ from $[1,M]$ to $[1,N]$:
 
-```math
+$$
 \text{per}(A) = \frac{1}{2^{N-1}} \cdot \frac{1}{(N - M + 1)!}\cdot \sum_{\delta \in \left[\delta_1 = 1,~ \delta_2 \dots \delta_N=\pm1\right]}{
         \left(\sum_{k=1}^N{\delta_k}\right)
         \prod_{j=1}^N{\left(
             \sum_{i=1}^M{\delta_i a_{i,j}} + \sum_{i=M+1}^N{\delta_i}
         \right)}
     }
-```
+$$
 
 **Parameters:**
 
@@ -93,7 +94,7 @@ This can be neatly fit into the original formula by extending the inner sums ove
 
 **Formula:**
 
-```math
+$$
 \text{per}(A) = \sum_{k=0}^{M-1}{
         {(-1)}^k
         \binom{N - M + k}{k}
@@ -103,7 +104,7 @@ This can be neatly fit into the original formula by extending the inner sums ove
             }
         }
     }
-```
+$$
 
 **Parameters:**
 
@@ -181,4 +182,4 @@ is with pip.
 # License
 
 This code is distributed under the GNU General Public License version 3 (GPLv3).
-See <http://www.gnu.org/licenses/> for more information.
+See <https://www.gnu.org/licenses/> for more information.