1 files changed, 0 insertions, 114 deletions
diff --git a/theta_lib/isogenies/isogeny_chain_dim4.py b/theta_lib/isogenies/isogeny_chain_dim4.py
deleted file mode 100644
index 8c0b78e..0000000
--- a/theta_lib/isogenies/isogeny_chain_dim4.py
+++ /dev/null
@@ -1,114 +0,0 @@
-from sage.all import *
-from ..utilities.strategy import precompute_strategy_with_first_eval, precompute_strategy_with_first_eval_and_splitting
-from .isogeny_dim4 import IsogenyDim4
-
-
-class IsogenyChainDim4:
-	def __init__(self, B_K, first_isogenies, e, m, splitting=True, strategy = None):
-		self.e=e
-		self.m=m
-
-		if strategy == None:
-			strategy = self.get_strategy(splitting)
-		self.strategy = strategy
-
-		self._isogenies=self.isogeny_chain(B_K, first_isogenies)
-
-
-	def get_strategy(self,splitting):
-		if splitting:
-			return precompute_strategy_with_first_eval_and_splitting(self.e,self.m,M=1,S=0.8,I=100)
-		else:
-			return precompute_strategy_with_first_eval(self.e,self.m,M=1,S=0.8,I=100)
-
-	def isogeny_chain(self, B_K, first_isogenies):
-		"""
-		Compute the isogeny chain and store intermediate isogenies for evaluation
-		"""
-		# Store chain of (2,2)-isogenies
-		isogeny_chain = []
-
-		# Bookkeeping for optimal strategy
-		strat_idx = 0
-		level = [0]
-		ker = B_K
-		kernel_elements = [ker]
-
-		# Length of the chain
-		n=self.e-self.m
-		
-		for k in range(n):
-			prev = sum(level)
-			ker = kernel_elements[-1]
-
-			while prev != (n - 1 - k):
-				level.append(self.strategy[strat_idx])
-				prev += self.strategy[strat_idx]
-
-				# Perform the doublings and update kernel elements
-				# Prevent the last unnecessary doublings for first isogeny computation
-				if k>0 or prev!=n-1:
-					ker = [ker[i].double_iter(self.strategy[strat_idx]) for i in range(4)]
-					kernel_elements.append(ker)
-
-				# Update bookkeeping variable
-				strat_idx += 1
-
-			# Compute the codomain from the 8-torsion
-			if k==0:
-				phi = first_isogenies
-			else:
-				phi = IsogenyDim4(Th,ker)
-
-			# Update the chain of isogenies
-			Th = phi._codomain
-			# print(parent(Th.null_point().coords()[0]))
-			isogeny_chain.append(phi)
-
-			# Remove elements from list
-			if k>0:
-				kernel_elements.pop()
-			level.pop()
-
-			# Push through points for the next step
-			kernel_elements = [[phi(T) for T in kernel] for kernel in kernel_elements]
-			# print([[parent(T.coords()[0]) for T in kernel] for kernel in kernel_elements])
-
-		return isogeny_chain
-
-	def evaluate_isogeny(self,P):
-		Q=P
-		for f in self._isogenies:
-			Q=f(Q)
-		return Q
-
-	def __call__(self,P):
-		return self.evaluate_isogeny(P)
-
-	def dual(self):
-		n=len(self._isogenies)
-		isogenies=[]
-		for i in range(n):
-			isogenies.append(self._isogenies[n-1-i].dual())
-		return DualIsogenyChainDim4(isogenies)
-
-
-class DualIsogenyChainDim4:
-	def __init__(self,isogenies):
-		self._isogenies=isogenies
-
-	def evaluate_isogeny(self,P):
-		n=len(self._isogenies)
-		Q=P
-		for j in range(n):
-			Q=self._isogenies[j](Q)
-		return Q
-
-	def __call__(self,P):
-		return self.evaluate_isogeny(P)
-
-
-
-
-		
-