Civil Rights
Movements, leaders, victories and the continuing fight for equality.
Explore the people, places, events, achievements, struggles and stories that shaped our journey.
Movements, leaders, victories and the continuing fight for equality.
Innovation, patents, science, technology and world-changing contributions.
Pioneers, champions, Negro Leagues, records, activism and excellence.
Meet the people whose lives, choices and achievements shaped the journey.
Black towns, communities, institutions and places where history happened.
Moments that changed communities, movements, institutions and the nation.
Wilmington, North Carolina once had a thriving Black middle class and an elected interracial government. In 1898 white supremacists used violence to overthrow that government, kill Black residents and drive many others from the city.
MORE →Reflects the personal views, recollections, and perspective of the author, Mike Davis.
This is a personal recollection on the Move fire on May 13, 1985
Algebraic may refer to any subject related to algebra in mathematics and related branches like algebraic number theory and algebraic topology. The word algebra itself has several meanings.
Algebraic may also refer to:
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Algebraic may refer to any subject related to algebra in mathematics and related branches like algebraic number theory and algebraic topology. The word algebra itself has several meanings. Algebraic may also refer to: Algebraic data type, a datatype in computer programming each of whose values is data from other datatypes wrapped in one of the constructors of the datatype Algebraic numbers, a complex number that is a root of a non-zero polynomial in one variable with integer coefficients Algebraic functions, functions satisfying certain polynomials Algebraic element, an element of a field extension which is a root of some polynomial over the base field Algebraic extension, a field extension such that every element is an algebraic element over the base field Algebraic structure, a set with one or more finitary operations defined on it Algebraic, the order of entering operations when using a calculator (contrast reverse Polish notation) Algebraic sum, a summation of quantities that takes into account their signs; e.g. the algebraic sum of 4, 3, and -8 is -1.
In functional programming, a generalized algebraic data type (GADT, also first-class phantom type, guarded recursive datatype, or equality-qualified type) is a generalization of a parametric algebraic data type (ADT).
The Hewlett-Packard HP-01 is a calculator watch. It was designed and manufactured by Hewlett-Packard (HP). The HP-01 used 7 light-emitting diodes (LEDs)/digit in a 7 digit + decimal point arrangement for its digital display. Introduced in 1977 at the height of the LED watch craze, five models were available, two gold filled models and three stainless models. Prices were from $450 to $550 for the low end steel or gold to $850 (equivalent to $4,516 in 2025). HP also sold a battery replacement kit that allowed the customers to change the batteries themselves. The watch uses two batteries for the display and one for the processor IC. It also comes with a ball-point pen with a stylus on the rear end. Most of the 28 buttons on the HP-01 are recessed, and are designed to be depressed with a stylus that is stored in the band. The production was stopped by the end of 1979. The HP-01 is unique not only as the only Hewlett-Packard watch but due to these unique features: Datatype for time, date, and time interval, and the ability to perform mathematics on these datatypes. A stopwatch that allows the stopwatch time to be multiplied or divided by a constant, and continuously display the results. This is referred to as a "Dynamic Rate Calculation." It can also display the day of the week for any date from 1900 to 2099. The HP-01 is Hewlett-Packard's first algebraic calculator. Prior to the HP-01, all HP calculators used Reverse Polish Notation (RPN). Some later HP calculators use a mixture of both.
Inductive data type may refer to: Algebraic data type, a datatype each of whose values is data from other datatypes wrapped in one of the constructors of the datatype Inductive family, a family of inductive data types indexed by another type or value Recursive data type, a data type for values that may contain other values of the same type
Before the 1921 destruction of Tulsa’s Greenwood District, Black residents had created a remarkable center of business and community life. The district included stores, professional offices, entertainment venues and homes owned by Black citizens. Understanding Greenwood means learning what was built—not only what was burned.
MORE →Joe Louis.