- =
DualIdeals ( X ) ∖ { ℘ ( X ) } ⊆
Prefilters ( X ) ⊆
FilterSubbases ( X ) . {\displaystyle {\textrm {Filters}}(X)\quad =\quad {\textrm {
DualIdeals}}(X)\...
- theory, but also topology,
whence they originate. The
notion dual to a
filter is an
order ideal.
Special cases of
filters include ultrafilters,
which are...
- {S} ,\leq ).} Let ∅ ≠ F ⊆
DualIdeals ( X ) {\displaystyle \varnothing \neq \mathbb {F} \subseteq \operatorname {
DualIdeals} (X)} and let ∪ F = ⋃ F ∈...
- are
exactly ideals in the ring-theoretic
sense on the
Boolean ring
formed by the
powerset of the
underlying set. The
dual notion of an
ideal is a filter...
-
Never 𝜎-Ring
Never Algebra (Field)
Never 𝜎-Algebra (𝜎-Field)
Never Dual ideal Filter Never Never ∅ ∉ F {\displaystyle \varnothing \not \in {\mathcal...
-
Never 𝜎-Ring
Never Algebra (Field)
Never 𝜎-Algebra (𝜎-Field)
Never Dual ideal Filter Never Never ∅ ∉ F {\displaystyle \varnothing \not \in {\mathcal...
- In the
philosophy of mind, mind–body
dualism denotes either that
mental phenomena are non-physical, or that the mind and body are
distinct and separable...
-
number theory, the
different ideal (sometimes
simply the different) is
defined to
measure the (possible) lack of
duality in the ring of
integers of an...
- currents.
Fidelity (or "faithfulness") and
felicity (or transparency),
dual ideals in translation, are
often (though not always) at odds. A 17th-century...
-
Algebraic concept in
measure theory, also
referred to as an
algebra of sets
Ideal (set theory) – Non-empty
family of sets that is
closed under finite unions...
