logo

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
from proveit.core_expr_types import k_1_to_m
from proveit.logic import Equals
from proveit.numbers import Add, Exp
from proveit.numbers.exponentiation import prod_a_raise_ki__1_to_m
In [2]:
# build up the expression from sub-expressions
expr = Equals(prod_a_raise_ki__1_to_m, Exp(a, Add(k_1_to_m)))
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^{k_{1}} \cdot  a^{k_{2}} \cdot  \ldots \cdot  a^{k_{m}}\right) = a^{k_{1} +  k_{2} +  \ldots +  k_{m}}
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: 5
operands: 6
4Operationoperator: 15
operands: 7
5Literal
6ExprTuple8
7ExprTuple20, 9
8ExprRangelambda_map: 10
start_index: 18
end_index: 19
9Operationoperator: 11
operands: 12
10Lambdaparameter: 24
body: 13
11Literal
12ExprTuple14
13Operationoperator: 15
operands: 16
14ExprRangelambda_map: 17
start_index: 18
end_index: 19
15Literal
16ExprTuple20, 21
17Lambdaparameter: 24
body: 21
18Literal
19Variable
20Variable
21IndexedVarvariable: 22
index: 24
22Variable
23ExprTuple24
24Variable