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  2. Old-fashioned doughnut - Wikipedia

    en.wikipedia.org/wiki/Old-fashioned_doughnut

    Media: Old-fashioned doughnuts. The old-fashioned doughnut is a term used for a variety of cake doughnut prepared in the shape of a ring with a cracked surface and tapered edges around it. [1] While many early cookbooks included recipes for "old-fashioned donuts" that were made with yeast, [2] the distinctive cake doughnuts sold in doughnut ...

  3. Identity Digital - Wikipedia

    en.wikipedia.org/wiki/Identity_Digital

    In November 2020, Afilias was acquired by the domain name registry operator Donuts. Managed TLDs. Identity Digital / Donuts is either the ICANN-approved sponsor organization or owns controlling interest in the ICANN-approved sponsor organization for 264 top-level domains, approximately 30% of all generally-available TLDs.

  4. Mathematical operators and symbols in Unicode - Wikipedia

    en.wikipedia.org/wiki/Mathematical_operators_and...

    The Arrows block (U+2190–U+21FF) contains line, curve, and semicircle arrows and arrow-like operators. The math subset of this block is U+2190–U+21A7, U+21A9–U+21AE, U+21B0–U+21B1, U+21B6–U+21B7, U+21BC–U+21DB, U+21DD, U+21E4–U+21E5, U+21F4–U+21FF.

  5. ACP 131 - Wikipedia

    en.wikipedia.org/wiki/ACP_131

    ACP-131 [1] is the controlling publication for the listing of Q codes and Z codes. It is published and revised from time to time by the Combined Communications Electronics Board (CCEB) countries: Australia, New Zealand, Canada, United Kingdom, and United States. When the meanings of the codes contained in ACP-131 are translated into various ...

  6. ISO 3166-1 alpha-2 - Wikipedia

    en.wikipedia.org/wiki/ISO_3166-1_alpha-2

    ISO 3166-1 alpha-2 codes are two-letter country codes defined in ISO 3166-1, part of the ISO 3166 standard [1] published by the International Organization for Standardization (ISO), to represent countries, dependent territories, and special areas of geographical interest. They are the most widely used of the country codes published by ISO (the ...

  7. Operator product expansion - Wikipedia

    en.wikipedia.org/wiki/Operator_product_expansion

    In quantum field theory, the operator product expansion (OPE) is used as an axiom to define the product of fields as a sum over the same fields. As an axiom, it offers a non-perturbative approach to quantum field theory. One example is the vertex operator algebra, which has been used to construct two-dimensional conformal field theories ...

  8. Android Donut - Wikipedia

    en.wikipedia.org/wiki/Android_Donut

    Android 1.6 Donut is the fourth version of the open source Android mobile operating system developed by Google. Among the more prominent features introduced with this update were added support for CDMA smartphones , additional screen sizes , a battery usage indicator, and a text-to-speech engine .

  9. Mobile country code - Wikipedia

    en.wikipedia.org/wiki/Mobile_country_code

    The mobile country code consists of three decimal digits and the mobile network code consists of two or three decimal digits (for example: MNC of 001 is not the same as MNC of 01). The first digit of the mobile country code identifies the geographic region as follows (the digits 1 and 8 are not used): 0: Test networks. 2: Europe.

  10. Displacement operator - Wikipedia

    en.wikipedia.org/wiki/Displacement_operator

    Using this definition, we can write the multimode displacement operator as D ^ ψ ( α ) = exp ⁡ ( α A ^ ψ † − α ∗ A ^ ψ ) {\displaystyle {\hat {D}}_{\psi }(\alpha )=\exp \left(\alpha {\hat {A}}_{\psi }^{\dagger }-\alpha ^{\ast }{\hat {A}}_{\psi }\right)} ,

  11. Telephone numbers in Iraq - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Iraq

    Telephone numbers in Iraq. Iraq area codes can be 1 or 2 digits (not counting the trunk prefix 0) and the subscriber numbers are usually 6 digits. In Baghdad and some other governorates, they are 7 digits. The mobile numbers have 10 digits, beginning with the 3-digit code of each operator followed by 7 digits.