Add polynomial addition and substraction in ring.

1 files changed, 6 insertions, 2 deletions

diff --git a/README.md b/README.md
index e25daa9..e109b02 100644
--- a/README.md
+++ b/README.md
@@ -18,18 +18,22 @@ $ make run_poly_mul
 guix shell qemu -- qemu-x86_64 -cpu max poly_mul
 Prime used for modulo operations: 127
 55 + 31 mod [-63,63] = -41
-Give first polynomial to multiply:
+Give first polynomial for the experiment:
 12 3 4 5
 Read polynomial: 5*x^3+4*x^2+3*x+12
-Give second polynomial to multiply:
+Give second polynomial for the experiment:
 11 1 2 3
 Read polynomial: 3*x^3+2*x^2+x+11
 Normal product of polynomials:
 15*x^6+22*x^5+22*x^4+101*x^3+71*x^2+45*x+132
+Normal sum of polynomials:
+8*x^3+6*x^2+4*x+23
 Give the degree m of X^m+1 polynomial to be used as divisor in the ring:
 7
 Product of polynomials in the ring:
 15*x^6+22*x^5+22*x^4-26*x^3-56*x^2+45*x+5
+Sum of polynomials in the ring:
+8*x^3+6*x^2+4*x+23
 ```
 
 Interestingly, only modulo operations in the latter range seem to be directly