# aleph Etymology, origin and meaning of aleph by etymonline

It became also the symbol for the number one and, with the dieresis, 1,000. It is the symbol also for one of the most famous of Greek Biblical manuscripts, the Codex Sinaiticus. $\aleph_1$ is the cardinality of the set of all countable XLM ordinal numbers. Using your example, aleph 0 is an infinite amount of people, but made up using finite persons.

The aleph after that would be having to wait for a countably infinite amount of people before you. The aleph after that would be waiting for an infinite amount of aleph ones. Couldn’t I just say aleph 2, for example, is an extension of aleph 0? Seem like you’re changing from one aleph to other.

## Aleph number

Please make sure you write it in your own words. Curiously enough, -dimensional space has the same number of points () as one-dimensional space, or any finite interval of one-dimensional space , as was first recognized by Georg Cantor. This article needs to be linked to other articles.

That use is more common in definition of alephs of Aramaic and Arabic origin, in foreign names, and some other borrowed words. Despite the name it does not correspond to an aleph in cognate Semitic words, where the single “reed” hieroglyph is found instead. On this Wikipedia the language links are at the top of the page across from the article title.

## aleph

The origin of the letter is registered aleph in the Bronze Age, about a thousand years before Christ, in the Proto-Canaanite alphabet, which is the most distant antecedent of our current alphabet. Initially, aleph was a hieroglyph that represented an ox, and from there it went to the Phoenician alphabet (’alp), the Greek , the Cyrillic and the Latin . In fact, if we invert a capital A we can still recognize the head of an ox and its horns. Aleph is he name of the first letter of the alefato, or, what is the same, the first of the consonants in the Hebrew alphabet. It is represented with the graphic sign “א” and, according to the Royal Academy of the Language, in Spanish it should be written and pronounced “alef”. Is a bijection from the ordinals to the infinite cardinals.

• Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields.
• And he has to wait for all those infinitely many people to use the bathroom before he can.
• Continuing in this manner, it is possible to define a cardinal number \aleph_\kappa for every ordinal number κ as will be described below.

Since the collection of all ordinals is too large to even be considered a set, the collection of all cardinals is too large to be a set as well. And we call these collections “proper classes” to say that they are not sets, but collections which while large enough, are still collections we can talk about. So $\aleph$ numbers come to tell us how many people are standing in that line. But in order to make this a well-defined notion, we use the shortest queue that can hold that many people.

(In definition of aleph, the Bible begins with the second letter of the alphabet, Bet.) As a reward, Aleph is allowed to start the Ten Commandments. The cardinality of the natural numbers is aleph-null (\aleph_0) (also aleph-nought), the next larger cardinality is aleph-one \aleph_1, then comes \aleph_2 and so on. Continuing in this manner, it is possible to define a cardinal number \aleph_\kappa for every ordinal number κ as will be described below. Here are some other words you could make with the letters aleph, you can also use this lookup tool to help you find words for the popular New York Times game Wordle.

Every aleph is the cardinality of some ordinal. Any set whose cardinality is an aleph is equinumerous with an ordinal and is thus well-orderable. $\aleph_$ is the cardinality of the set of all ordinal numbers of cardinality $\aleph_\omega$. $\aleph_\omega$ is the cardinality of the set of all ordinal numbers of cardinality no bigger than some $\aleph_n$ for finite $n$. Well, this mapping is a bijection between the ordinals and the $\aleph$ numbers.

A https://www.beaxy.com/ has cardinality $\aleph_0$ if and only if it is countably infinite. If every set can be well-ordered — a proposition equivalent to the axiom of choice — then every infinite cardinality is one of these. He was the first to realize that infinite sets can have different cardinalities. The cardinality of any infinite ordinal number is an aleph number.

The concept goes back to Georg Cantor, who defined the notion of cardinality and realized that infinite sets can have different cardinalities. Aleph-1 is the set theory symbol for the smallest infinite set larger than (Aleph-0), which in turn is equal to the cardinal number of the set of countable ordinal numbers. The aleph numbers are a sequence of numbers used to represent the cardinality of infinite sets that can be well-ordered. The concept and notation are due to Georg Cantor,who defined the notion of cardinality and realized that infinite sets can have different cardinalities. The continuum hypothesis asserts that , where is the cardinal numberof the “large” infinite setof real numbers . However, the truth of the continuum hypothesis depends on the version of set theoryyou are using and so is undecidable.

## Dictionary entries near aleph

In set theory, the Hebrew aleph glyph is used as the symbol to denote the aleph numbers, which represent the cardinality of infinite sets. This notation was introduced by mathematician Georg Cantor. In older mathematics books, the letter aleph is often printed upside down by accident, partly because a Monotype matrix for aleph was mistakenly constructed the wrong way up. For Aleph One as it pertains to the Marathon computer game, see that article.In the branch of mathematics known as set theory, aleph usually refers to a series of numbers used to represent the cardinality of infinite sets.

• Kabbalah uses the letter א to denote God, who is referred to as אין סוף, Ayn Sof, the Infinite, in Kabbalah.
• The name is that of the symbol used to denote these numbers, the Hebrew letter aleph (\aleph).
• From which it follows that the Aleph represents, as in Mathematics, infinity and, by extension, the universe.
• It may be modified as follows to represent other numbers.

But here we can talk about infinite queues as well. LTC At some point we have an infinite queue, but everyone on that queue is just a finite number of people away from the bathroom. This is the same as the natural numbers, there are infinitely many of them, but each is preceded by just a finite number. It should be noted that the aleph numbers are unrelated to the ∞ commonly found in algebra and calculus. Infinity (∞), however, could roughly be defined as the extreme limit of the real number line.

## Is aleph the same as Alpha?

Approximately 4,000 years ago the original picture for the letter aleph was the head of an ox. About 3,000 years ago the picture was simplified and around this time the Greeks adopted this alphabet for their own use and the Hebrew aleph became the Greek letter alpha.

But after you’ve done this for every countable queue possible, you have an uncountable queue, and each person in that queue is just a countable number of people away. But here comes a new person, and she has to wait uncountably many people before she can see the inside of that bathroom. That girl is standing on the first uncountable point of the queue. And sure enough, we can continue again, and extend and enlarge and so on and so forth.