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Expression of type Equals

from the theory of proveit.numbers.numerals.decimals

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 ExprRange, Variable
from proveit.logic import Equals
from proveit.numbers import nine, one
In [2]:
# build up the expression from sub-expressions
expr = Equals([ExprRange(Variable("_a", latex_format = r"{_{-}a}"), nine, one, nine)], [nine, nine, nine, nine, nine, nine, nine, nine, nine])
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(9, 9, ..6 \times.., 9\right) = \left(9, 9, 9, 9, 9, 9, 9, 9, 9\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
3ExprTuple5
4ExprTuple9, 9, 9, 9, 9, 9, 9, 9, 9
5ExprRangelambda_map: 6
start_index: 7
end_index: 9
6Lambdaparameter: 10
body: 9
7Literal
8ExprTuple10
9Literal
10Variable