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Expression of type Equals

from the theory of proveit.numbers.exponentiation

In [1]:
import proveit
# Automation is not needed when building an expression:
proveit.defaults.automation = False # This will speed things up.
proveit.defaults.inline_pngs = False # Makes files smaller.
%load_expr # Load the stored expression as 'stored_expr'
# import Expression classes needed to build the expression
from proveit import a, b, c, d
from proveit.logic import Equals
from proveit.numbers import Exp, Mult, subtract
In [2]:
# build up the expression from sub-expressions
expr = Equals(Exp(Mult(a, b), c), Mult(Exp(a, d), Mult(Exp(a, subtract(c, d)), Exp(b, c))))
expr:
In [3]:
# check that the built expression is the same as the stored expression
assert expr == stored_expr
assert expr._style_id == stored_expr._style_id
print("Passed sanity check: expr matches stored_expr")
Passed sanity check: expr matches stored_expr
In [4]:
# Show the LaTeX representation of the expression for convenience if you need it.
print(stored_expr.latex())
\left(a \cdot b\right)^{c} = \left(a^{d} \cdot \left(a^{c - d} \cdot b^{c}\right)\right)
In [5]:
stored_expr.style_options()
namedescriptiondefaultcurrent valuerelated methods
operation'infix' or 'function' style formattinginfixinfix
wrap_positionsposition(s) at which wrapping is to occur; '2 n - 1' is after the nth operand, '2 n' is after the nth operation.()()('with_wrapping_at', 'with_wrap_before_operator', 'with_wrap_after_operator', 'without_wrapping', 'wrap_positions')
justificationif any wrap positions are set, justify to the 'left', 'center', or 'right'centercenter('with_justification',)
directionDirection of the relation (normal or reversed)normalnormal('with_direction_reversed', 'is_reversed')
In [6]:
# display the expression information
stored_expr.expr_info()
 core typesub-expressionsexpression
0Operationoperator: 1
operands: 2
1Literal
2ExprTuple3, 4
3Operationoperator: 17
operands: 5
4Operationoperator: 12
operands: 6
5ExprTuple7, 24
6ExprTuple8, 9
7Operationoperator: 12
operands: 10
8Operationoperator: 17
operands: 11
9Operationoperator: 12
operands: 13
10ExprTuple19, 21
11ExprTuple19, 28
12Literal
13ExprTuple14, 15
14Operationoperator: 17
operands: 16
15Operationoperator: 17
operands: 18
16ExprTuple19, 20
17Literal
18ExprTuple21, 24
19Variable
20Operationoperator: 22
operands: 23
21Variable
22Literal
23ExprTuple24, 25
24Variable
25Operationoperator: 26
operand: 28
26Literal
27ExprTuple28
28Variable