diff --git a/20oct/myList.py b/20oct/myList.py
new file mode 100644
index 0000000..790ab10
--- /dev/null
+++ b/20oct/myList.py
@@ -0,0 +1,148 @@
+"""
+    Nous ne pouvons utiliser que pop et append pour les lists
+"""
+
+import math
+
+
+def map(fun, it):
+    """execute la fonction sur chaques elements de la liste """
+    ret = list()
+    for i in it:
+        ret.append(fun(i))
+    return ret
+
+
+def filter(test_fun, it):
+    """return a list of all el of it that passes test fun """
+    ret = list()
+    for i in it:
+        v = test_fun(i)
+        if v:
+            ret.append(i)
+    return ret
+
+
+def reduce(fun, it):
+    ret = fun(it[0], it[1])
+    for i in range(2, len(it)):
+        ret = fun(ret, it[i])
+    return ret
+
+
+def prime_numbers(n):
+    """make a list of n first prime elements """
+    ret = list()
+    cursor = 2
+    while len(ret) < n:
+        check = True
+        for i in range(2, cursor):
+            if cursor % i == 0:
+                check = False
+        if check:
+            ret.append(cursor)
+        cursor += 1
+    return ret
+
+
+def is_prime(n):
+    if n == 0 or n == 1:
+        return False
+    for i in range(2, n):
+        if n % i == 0:
+            return False
+    return True
+
+
+def insert(seq, n):
+    """insert n in the seq at the right position
+    :seq: List par ordre croissant
+    """
+    ret = list()
+    cursor = None
+    for i in range(len(seq)):
+        if seq[i] < n:
+            ret.append(seq[i])
+        else:
+            cursor = i
+            break
+    ret.append(n)
+    if cursor is None:
+        return ret
+    for j in seq[cursor:]:
+        ret.append(j)
+    return ret
+
+
+def produit_matriciel(matrice1, matrice2):
+    """fait le produit matriciel de 2 matrices """
+    if len(matrice1[0]) != len(matrice2):
+        return None
+    ret = list()
+    for i in range(len(matrice1)):
+        temp = list()
+        for j in range(len(matrice1)):
+            temp.append(sum_for_matrices(matrice1, i, matrice2, j))
+        ret.append(temp)
+    if len(ret) == 1:
+        return ret[0][0]
+    return ret
+
+
+def sum_for_matrices(a, i, b, j):
+    tot = 0
+    for k in range(0, len(b)):
+        tot += a[i][k] * b[k][j]
+    return tot
+
+
+def test(fun, *args, result):
+    if len(args) == 1:
+        test = fun(args[0])
+        if test == result:
+            print(f"✅{fun.__name__}({args[0]}) == {result} -- SUCCESS!")
+        else:
+            print(f"❌{fun.__name__}({args[0]}) == {result} -- ERROR! (returned {test})")
+    elif len(args) == 2 and hasattr(args[0], '__name__'):
+        test = fun(args[0], args[1])
+        if test == result:
+            print(f"✅{fun.__name__}({args[0].__name__}, {args[1]}) == {result} -- SUCCESS!")
+        else:
+            print(f"❌{fun.__name__}({args[0].__name__}, {args[1]}) == {result} -- ERROR! (returned {test})")
+    elif len(args) == 2:
+        test = fun(args[0], args[1])
+        if test == result:
+            print(f"✅{fun.__name__}({args[0]}, {args[1]}) == {result} -- SUCCESS!")
+        else:
+            print(f"❌{fun.__name__}({args[0]}, {args[1]}) == {result} -- ERROR! (returned {test})")
+
+
+if __name__ == "__main__":
+    test(map, math.sqrt, [], result=[])
+    test(map, math.sqrt, [2.0, 4.0, 6.0, 100.0], result=[1.4142135623730951, 2.0, 2.449489742783178, 10.0])
+    test(map, str.upper, list('hello'), result=['H', 'E', 'L', 'L', 'O'])
+
+    test(filter, is_prime, range(20), result=[2, 3, 5, 7, 11, 13, 17, 19])
+    test(filter, str.isalpha, list('r2d2'), result=['r', 'd'])
+
+    test(reduce, math.pow, [2, 2], result=4.0)
+    test(reduce, math.pow, [2, 3, 4], result=4096.0)
+
+    test(prime_numbers, 1, result=[2])
+    test(prime_numbers, 12, result=[2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37])
+
+    test(is_prime, 1, result=False)
+    test(is_prime, 2, result=True)
+    test(is_prime, 3, result=True)
+    test(is_prime, 33, result=False)
+
+    test(insert, [], 1, result=[1])
+    test(insert, list(range(6)), -1, result=[-1, 0, 1, 2, 3, 4, 5])
+    test(insert, list(range(6)), 3, result=[0, 1, 2, 3, 3, 4, 5])
+    test(insert, list(range(6)), 10, result=[0, 1, 2, 3, 4, 5, 10])
+
+    test(produit_matriciel, [[2, 0, 1], [3, 6, 2]], [[1, 5], [2, 6], [3, 7]], result=[[5, 17], [21, 65]])
+    test(produit_matriciel, [[1, 5], [2, 6], [3, 7]], [[2, 0, 1], [3, 6, 2]], result=[[17, 30, 11], [22, 36, 14], [27, 42, 17]])
+    test(produit_matriciel, [[1.0, 2.5]], [[3.0], [4.5]], result=14.25)
+    test(produit_matriciel, [[1.0, 2.5]], [[3.0, 4.5]], result=None)
+    test(produit_matriciel, [[1, 5], [2, 6], [3, 7]], [[1, 5], [2, 6], [3, 7]], result=None)
diff --git a/20oct/serie5.pdf b/20oct/serie5.pdf
new file mode 100644
index 0000000..24cfbcb
Binary files /dev/null and b/20oct/serie5.pdf differ