Circle-Packings/fractal_dimension/mcmullen_stuff/fourtree.py
2021-07-16 00:59:31 -04:00

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Python

from fournode import Node
import math
import numpy as np
import time
from scipy.sparse import csr_matrix
def functions(n, z):
if n == 0:
#return 3 - 2*math.sqrt(2) + (3 - 2*math.sqrt(2))*1j + np.conj((-1 + math.sqrt(2))**2 / ((-3 + 2*math.sqrt(2) - (3 - 2*math.sqrt(2))*1j + z)))
return 3-2*math.sqrt(2) + (3-2*math.sqrt(2))*1j + np.conj((1 / (17+12*math.sqrt(2))) / (z - (3-2*math.sqrt(2) + (3-2*math.sqrt(2))*1j)))
elif n == 1:
#return -3 + 2*math.sqrt(2) + (3 - 2*math.sqrt(2))*1j + np.conj((-1 + math.sqrt(2))**2 / ((3 - 2*math.sqrt(2) - (3 - 2*math.sqrt(2))*1j + z)))
return -3+2*math.sqrt(2) + (3-2*math.sqrt(2))*1j + np.conj((1 / (17+12*math.sqrt(2))) / (z - (-3+2*math.sqrt(2) + (3-2*math.sqrt(2))*1j)))
elif n == 2:
#return -3 + 2*math.sqrt(2) + (-3 + 2*math.sqrt(2))*1j + np.conj((-1 + math.sqrt(2))**2 / ((3 - 2*math.sqrt(2) - (-3 + 2*math.sqrt(2))*1j + z)))
return -3+2*math.sqrt(2) + (-3+2*math.sqrt(2))*1j + np.conj((1 / (17+12*math.sqrt(2))) / (z - (-3+2*math.sqrt(2) + (-3+2*math.sqrt(2))*1j)))
elif n == 3:
#return 3 - 2*math.sqrt(2) + (-3 + 2*math.sqrt(2))*1j + np.conj((-1 + math.sqrt(2))**2 / ((-3 + 2*math.sqrt(2) - (-3 + 2*math.sqrt(2))*1j + z)))
return 3-2*math.sqrt(2) + (-3+2*math.sqrt(2))*1j + np.conj((1 / (17+12*math.sqrt(2))) / (z - (3-2*math.sqrt(2) + (-3+2*math.sqrt(2))*1j)))
elif n == 4:
#return 1 + 1j + np.conj((-1 + math.sqrt(2))**2 / (-1 - 1j + z))
return 1 + 1j + np.conj(1 / (z - 1 - 1j))
elif n == 5:
#return -1 + 1j + np.conj((-1 + math.sqrt(2))**2 / (1 - 1j + z))
return -1 + 1j + np.conj(1 / (z + 1 - 1j))
elif n == 6:
#return -1 - 1j + np.conj((-1 + math.sqrt(2))**2 / (1 + 1j + z))
return -1 - 1j + np.conj(1 / (z + 1 + 1j))
elif n == 7:
#return 1 - 1j + np.conj((-1 + math.sqrt(2))**2 / (-1 + 1j + z))
return 1 - 1j + np.conj(1 / (z - 1 + 1j))
def derivatives(n, z):
if n == 0:
#return abs(-((-3 + 2*math.sqrt(2) - (3 - 2*math.sqrt(2))*1j + z)**2 / (-1 + math.sqrt(2))**2))
return abs((17+12*math.sqrt(2))*(-3+2*math.sqrt(2)-(3-2*math.sqrt(2))*1j + z)**2)
elif n == 1:
#return abs(-((3 - 2*math.sqrt(2) - (3 - 2*math.sqrt(2))*1j + z)**2 / (-1 + math.sqrt(2))**2))
return abs((17+12*math.sqrt(2))*(3-2*math.sqrt(2)-(3-2*math.sqrt(2))*1j + z)**2)
elif n == 2:
#return abs(-((3 - 2*math.sqrt(2) - (-3 + 2*math.sqrt(2))*1j + z)**2 / (-1 + math.sqrt(2))**2))
return abs((17+12*math.sqrt(2))*(3-2*math.sqrt(2)-(-3+2*math.sqrt(2))*1j + z)**2)
elif n == 3:
#return abs(-((-3 + 2*math.sqrt(2) - (-3 + 2*math.sqrt(2))*1j + z)**2 / (-1 + math.sqrt(2))**2))
return abs((17+12*math.sqrt(2))*(-3+2*math.sqrt(2)-(-3+2*math.sqrt(2))*1j + z)**2)
elif n == 4:
#return abs(-((-1 - 1j + z)**2 / (-1 + math.sqrt(2))**2))
return abs((-1-1j+z)**2)
elif n == 5:
#return abs(-((1 - 1j + z)**2 / (-1 + math.sqrt(2))**2))
return abs((1-1j+z)**2)
elif n == 6:
#return abs(-((1 + 1j + z)**2 / (-1 + math.sqrt(2))**2))
return abs((1+1j+z)**2)
elif n == 7:
#return abs(-((-1 + 1j + z)**2 / (-1 + math.sqrt(2))**2))
return abs((-1+1j+z)**2)
def samplePoint(word):
if word[-1] == 4:
p = 1/2 + 1j/2
elif word[-1] == 5:
p = -1/2 + 1j/2
elif word[-1] == 7:
p = 1/2 - 1j/2
elif word[-1] == 6:
p = -1/2 - 1j/2
elif word[-1] == 1:
p = -3+2*math.sqrt(2) + (3-2*math.sqrt(2))*1j
elif word[-1] == 0:
p = 3-2*math.sqrt(2) + (3-2*math.sqrt(2))*1j
elif word[-1] == 2:
p = -3+2*math.sqrt(2) + (-3+2*math.sqrt(2))*1j
elif word[-1] == 3:
p = 3-2*math.sqrt(2) + (-3+2*math.sqrt(2))*1j
for letter in word[-2::-1]:
p = functions(letter, p)
return p
def sampleValue(word):
return derivatives(word[0], samplePoint(word))
def generateTree(words, dc):
generators = [np.array([[1, 0, 0, 0, 0, 0], [0, 1, 0, 0, 0, 0], [3, 3, 0, -1, 4, 0], [4, 2, 0, -1, 4, 0], [0, 0, 0, 0, 1, 0], [4, 3, 0, -1, 3, 0]]),
np.array([[1, 0, 0, 0, 0, 0], [3, 0, -1, 3, 4, 0], [2, 0, -1, 4, 4, 0], [0, 0, 0, 1, 0, 0], [0, 0, 0, 0, 1, 0], [3, 0, -1, 4, 3, 0]]),
np.array([[0, 0, 3, 4, 3, -1], [0, 0, 4, 3, 3, -1], [0, 0, 1, 0, 0, 0], [0, 0, 0, 1, 0, 0], [0, 0, 0, 0, 1, 0], [0, 0, 4, 4, 2, -1]]),
np.array([[0, 3, 3, -1, 4, 0], [0, 1, 0, 0, 0, 0], [0, 0, 1, 0, 0, 0], [0, 2, 4, -1, 4, 0], [0, 0, 0, 0, 1, 0], [0, 3, 4, -1, 3, 0]]),
np.array([[1, 0, 0, 0, 0, 0], [0, 1, 0, 0, 0, 0], [3, 4, 0, 0, -1, 3], [4, 3, 0, 0, -1, 3], [4, 4, 0, 0, -1, 2], [0, 0, 0, 0, 0, 1]]),
np.array([[1, 0, 0, 0, 0, 0], [3, 0, -1, 3, 0, 4], [2, 0, -1, 4, 0, 4], [0, 0, 0, 1, 0, 0], [3, 0, -1, 4, 0, 3], [0, 0, 0, 0, 0, 1]]),
np.array([[0, 0, 3, 4, -1, 3], [0, 0, 4, 3, -1, 3], [0, 0, 1, 0, 0, 0], [0, 0, 0, 1, 0, 0], [0, 0, 4, 4, -1, 2], [0, 0, 0, 0, 0, 1]]),
np.array([[0, 3, 3, -1, 0, 4], [0, 1, 0, 0, 0, 0], [0, 0, 1, 0, 0, 0], [0, 2, 4, -1, 0, 4], [0, 3, 4, -1, 0, 3], [0, 0, 0, 0, 0, 1]])]
root = Node([1 + math.sqrt(2), 1 + math.sqrt(2), 1 + math.sqrt(2), 1 + math.sqrt(2), 3 + 2*math.sqrt(2), -1], [], words, False)
current_leaves = [root]
nodes = 1
while True:
new_leaves = []
for leaf in current_leaves:
next_gen = leaf.next_generation(words, dc, generators)
new_leaves += next_gen
nodes += len(next_gen) if len(next_gen) > 1 else 0
if current_leaves == new_leaves:
break
else:
current_leaves = new_leaves
for i,leaf in enumerate(current_leaves):
words[str(leaf.word)] = i
print(len(current_leaves), "partitions")
print(nodes,"nodes")
return current_leaves
def constructMatrix(words, dc):
leave = generateTree(words, dc)
row = []
col = []
data = []
for i,leaf in enumerate(leave):
thing = words[str(leaf.word[1:])]
if isinstance(thing,int):
row.append(i)
col.append(thing)
data.append(sampleValue(leaf.word))
else:
sample = sampleValue(leaf.word)
for wor in thing.leaves():
row.append(i)
col.append(words[str(wor.word)])
data.append(sample)
return csr_matrix((data,(row,col)),shape=(len(leave),len(leave)))
def secant(x0,y0,x1,y1,z):
return x0 - (y0-z) * ((x1-x0)/(y1-y0))
def matrixFunction(matrix,l,a):
matrix = matrix.power(a)
vec = np.ones(l)
previous_entry = vec[0]
previous_val = 0
current = matrix * vec
current_val = current[0] / previous_entry
count = 0
while count < 10000000000 and abs(current_val - previous_val) > 1e-15:
previous_val = current_val
previous_entry = current[0]
current = matrix * current
#print(current[0],previous_entry)
current_val = current[0] / previous_entry
count += 1
print("power method:", count)
return current_val
def secantMethod(matrix,l,z,x1,x2,e,its):
k1 = x1
k2 = x2
y1 = matrixFunction(matrix,l,k1)
y2 = matrixFunction(matrix,l,k2)
#y1 = testFunction(k1)
#y2 = testFunction(k2)
count = 1
print(count,k1,y1)
while abs(y1-z)>e and count<its:
k3 = secant(k1,y1,k2,y2,z)
k1 = k2
y1 = y2
k2 = k3
y2 = matrixFunction(matrix,l,k2)
#y2 = testFunction(k2)
count += 1
print(count,k1,y1)
def main():
start = time.time()
words = {}
matrix = constructMatrix(words,5000)
#print(matrix)
print("construction (s): %f\nconstruction (m): %f" % (time.time()-start, (time.time()-start)/60))
#print(csr_matrix.transpose(matrix))
print(csr_matrix.count_nonzero(matrix), (matrix.shape[0])*7)
secantMethod(matrix,matrix.shape[0],1,1.33,1.34,10**(-10),1000)
print("total (s): %f\ntotal (m): %f" % (time.time()-start, (time.time()-start)/60))
main()