Simple (abstract algebra)

In mathematics, the term simple is used to describe an algebraic structure which in some sense cannot be divided by a smaller structure of the same type. Put another way, an algebraic structure is simple if the kernel of every homomorphism is either the whole structure or a single element. Some examples are:

The general pattern is that the structure admits no non-trivial congruence relations.

The term is used differently in semigroup theory. A semigroup is said to be simple if it has no nontrivial ideals, or equivalently, if Green's relation J is the universal relation. Not every congruence on a semigroup is associated with an ideal, so a simple semigroup may have nontrivial congruences. A semigroup with no nontrivial congruences is called congruence simple.

Simple (bank)

Simple is an American direct bank based in Portland, Oregon. The company provides FDIC-insured checking accounts through a partnership with The Bancorp and is part of the STAR network for surcharge-free access to around 55,000 ATMs. Since 2014, Simple has been part of the BBVA Group, one of the largest banks in Europe.

History

What was initially known as BankSimple was founded in 2009 in Brooklyn by former CTO Alex Payne, CEO Joshua Reich and CFO Shamir Karkal. In August 2011, the company raised $10 million from investors led by IA Ventures, Shasta Ventures and Dave McClure's fund 500 Startups. Later that month, the company moved its headquarters to Portland, where five of the company's 17 employees already resided.

The company launched in the summer of 2012 as a limited beta.

By January 2013, the company had 20,000 customers and had processed more than $200 million in transactions. By July 2013, its customers had increased to 40,000 and total transaction values increased to greater than $1 billion. At year's end in 2013, Simple reported processing on average around 13 debit transactions per minute with an overall customer balance of $64 million.

Leaf

A leaf is an organ of a vascular plant and is the principal lateral appendage of the stem. The leaves and stem together form the shoot.Foliage is a mass noun that refers to leaves collectively.

Typically a leaf is a thin, dorsiventrally flattened organ, borne above ground and specialized for photosynthesis. Most leaves have distinctive upper (adaxial) and lower (abaxial) surfaces that differ in colour, hairiness, the number of stomata (pores that intake and output gases) and other features. In most plant species, leaves are broad and flat. Such species are referred to as broad-leaved plants. Many gymnosperm species have thin needle-like leaves that can be advantageous in cold climates frequented by snow and frost. Leaves can also have other shapes and forms such as the scales in certain species of conifers. Some leaves are not above ground (such as bulb scales). Succulent plants often have thick juicy leaves, but some leaves are without major photosynthetic function and may be dead at maturity, as in some cataphylls, and spines). Furthermore, several kinds of leaf-like structures found in vascular plants are not totally homologous with them. Examples include flattened plant stems (called phylloclades and cladodes), and phyllodes (flattened leaf stems), both of which differ from leaves in their structure and origin. Many structures of non-vascular plants, and even of some lichens, which are not plants at all (in the sense of being members of the kingdom Plantae), look and function much like leaves. The primary site of photosynthesis in most leaves (palisade mesophyll) almost always occurs on the upper side of the blade or lamina of the leaf but in some species, including the mature foliage of Eucalyptus palisade occurs on both sides and the leaves are said to be isobilateral.

Maid

A maid, or housemaid or maidservant, is a female person employed in domestic service. Although now usually found only in the most wealthy of households, in the Victorian era domestic service was the second largest category of employment in England and Wales, after agricultural work.

Description

Once part of an elaborate hierarchy in great houses, today a single maid may be the only domestic worker that upper and even middle-income households can afford, as was historically the case for many households. In the contemporary Western world, comparatively few households can afford live-in domestic help, usually compromising on periodic cleaners. In less developed nations, very large differences in the income of urban and rural households and between different socio-economic classes, fewer educated women and limited opportunities for working women ensures a labour source for domestic work.

Maids perform typical domestic chores such as cooking, ironing, washing, cleaning the house, grocery shopping, walking the family dog, and taking care of children. In many places in some poor countries, maids often take on the role of a nurse in taking care of the elderly and people with disabilities. Many maids are required by their employers to wear a uniform.

Non-RAID drive architectures

The most widespread standard for configuring multiple hard disk drives is RAID (Redundant Array of Inexpensive/Independent Disks), which comes in a number of standard configurations and non-standard configurations. Non-RAID drive architectures also exist, and are referred to by acronyms with similarity to RAID, several tongue-in-cheek

Williams

Williams can refer to:

People

Places

Australia

United States

Communities

Facilities

Williams (Cambridge University cricketer)

Williams (first name and dates unknown) was an English first-class cricketer associated with Cambridge University who was active in the 1820s. He is recorded in two matches, totalling 3 runs with a highest score of 3 not out.

References

Bibliography