- Non-
well-founded
set theories are
variants of
axiomatic set theory that
allow sets to be
elements of
themselves and
otherwise violate the rule of
well-foundedness...
- In mathematics, a
well-order (or
well-ordering or
well-order relation) on a
set S is a
total ordering on S with the
property that
every non-empty subset...
- In mathematics, a
binary relation R is
called well-founded (or
wellfounded or foundational) on a
set or, more generally, a
class X if
every non-empty subset...
- The
oldest and most
common kind of
well is a
water well, to
access groundwater in
underground aquifers. The
well water is
drawn up by a pump, or using...
-
lexical set,
which Wells, for ease,
calls the
STRUT set. Meanwhile,
words like bid, cliff, limb, miss, etc. form a
separate lexical set:
Wells's KIT
set. Originally...
-
sets as
well, i.e.,
sets themselves can be
members of
other sets. A
derived binary relation between two
sets is the
subset relation, also
called set inclusion...
- and it not only
allows induction to be done on
well-ordered
sets but also on
proper classes that are
well-founded
relational structures such as the lexicographical...
-
other sets. A
set may have a
finite number of
elements or be an
infinite set.
There is a
unique set with no elements,
called the
empty set; a
set with...
-
Set (/
sɛt/; Egyptological:
Sutekh - swtẖ ~ stẖ or: Seth /sɛθ/) is a god of deserts, storms, disorder, violence, and
foreigners in
ancient Egyptian religion...
- of only two
sets. Ice Age and
Alliances were the
first two
sets to have a
well-defined relationship, but the idea of
calling connected sets a "block" or...
