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  2. Aleph number - Wikipedia

    en.wikipedia.org/wiki/Aleph_number

    aleph-nought, aleph-zero, or aleph-null) is the cardinality of the set of all natural numbers, and is an infinite cardinal.The set of all finite ordinals, called or (where is the lowercase Greek letter omega), also has cardinality .

  3. Alpha - Wikipedia

    en.wikipedia.org/wiki/Alpha

    Alpha / ˈ æ l f ə / [1] (uppercase Α, lowercase α) [a] is the first letter of the Greek alphabet. In the system of Greek numerals , it has a value of one. Alpha is derived from the Phoenician letter aleph , which is the West Semitic word for " ox ". [ 2 ]

  4. List of numeral systems - Wikipedia

    en.wikipedia.org/wiki/List_of_numeral_systems

    "A base is a natural number B whose powers (B multiplied by itself some number of times) are specially designated within a numerical system." [1]: 38 The term is not equivalent to radix, as it applies to all numerical notation systems (not just positional ones with a radix) and most systems of spoken numbers. [1]

  5. Fine-structure constant - Wikipedia

    en.wikipedia.org/wiki/Fine-structure_constant

    In physics, the fine-structure constant, also known as the Sommerfeld constant, commonly denoted by α (the Greek letter alpha), is a fundamental physical constant that quantifies the strength of the electromagnetic interaction between elementary charged particles.

  6. Alphabetic numeral system - Wikipedia

    en.wikipedia.org/wiki/Alphabetic_numeral_system

    An alphabetic numeral system is a type of numeral system.Developed in classical antiquity, it flourished during the early Middle Ages. [1] In alphabetic numeral systems, numbers are written using the characters of an alphabet, syllabary, or another writing system.

  7. Alpha vs. beta in investing: What’s the difference? - AOL

    www.aol.com/finance/alpha-vs-beta-investing...

    Alpha is a way to measure excess return, while beta is used to measure the volatility, or risk, of an asset. Beta might also be referred to as the return you can earn by passively owning the market.

  8. The firm was founded by the social researcher Mark McCrindle, who coined the term Gen Alpha. Here is a rundown of the generational buckets commonly used for those born in the last 100 years: Gen ...

  9. Alpha decay - Wikipedia

    en.wikipedia.org/wiki/Alpha_decay

    Alpha decay or α-decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus) and thereby transforms or "decays" into a different atomic nucleus, with a mass number that is reduced by four and an atomic number that is reduced by two. An alpha particle is identical to the nucleus of a helium-4 atom ...