euler (filter)

5reg

euler (filter)

Replaced by attributes of &xml-filterprop;

Content Model
    euler ::= (#PCDATA)

&eltdepver;7.0

## Description

This element was used in the past to represent a constraint on the Euler characteristic of a normal surface. Since ®ina; 7.0, this constraint is now stored in the attributes of the corresponding &xml-filterprop; element instead.

An &xml-euler-filter; element encodes a list of allowed Euler characteristics in the character data for the &xml; element. This character data should contain a whitespace-separated list of integers; a surface will satisfy this constraint if its Euler characteristic belongs to this list.

The list of acceptable Euler characteristics must not be empty.

### Parents

The following elements contain `euler` (in the context of a constraint on surface properties):

- &xml-filter-properties;

.

### Children

Element `euler` (in the context of a constraint on surface properties) has no children.