* see dependencies *

In [1]:

```
import proveit
# Automation is not needed when only building an expression:
proveit.defaults.automation = False # This will speed things up.
proveit.defaults.inline_pngs = False # Makes files smaller.
%load_axiom_expr # Load the stored axiom expression as 'stored_expr'
# import the special expression
from proveit.numbers.number_sets.natural_numbers import natural_pos_def
```

In [2]:

```
# check that the built expression is the same as the stored expression
assert natural_pos_def.expr == stored_expr
assert natural_pos_def.expr._style_id == stored_expr._style_id
print("Passed sanity check: natural_pos_def matches stored_expr")
```

In [3]:

```
# Show the LaTeX representation of the expression for convenience if you need it.
print(natural_pos_def.latex())
```

In [4]:

```
natural_pos_def.style_options()
```

Out[4]:

In [5]:

```
# display the expression information
natural_pos_def.expr_info()
```

Out[5]: