• Thumbnail for Invert error
    philately, an invert error occurs when part of a stamp is printed upside-down. Inverts are perhaps the most spectacular of postage stamp errors, not only...
    5 KB (559 words) - 04:08, 22 September 2023
  • Thumbnail for Inverted Jenny
    one of the most famous errors in American philately. Only one pane of 100 of the invert stamps was ever found, making this error one of the most prized...
    32 KB (3,908 words) - 12:15, 2 May 2025
  • Thumbnail for Errors, freaks, and oddities
    may be confiscated from collectors; the Nixon invert is a well-known recent example of an apparent new error that turned out to be simple theft by insiders...
    8 KB (1,065 words) - 14:28, 21 August 2024
  • Thumbnail for Inverted Swan
    The Inverted Swan, a 4-pence blue postage stamp issued in 1855 by Western Australia, was one of the world's first invert errors. Technically, it is the...
    5 KB (499 words) - 15:04, 19 April 2025
  • The CIA invert is a one-dollar value postage stamp error issued by the United States Postal Service. It is one stamp from the Americana series that were...
    6 KB (667 words) - 23:48, 20 August 2023
  • constitute a Type I error, while failing to prove a guilty person as guilty would constitute a Type II error. If the null hypothesis were inverted, such that people...
    32 KB (4,584 words) - 02:51, 25 April 2025
  • Thumbnail for Dag Hammarskjöld invert
    The Dag Hammarskjöld invert is a 4 cent value postage stamp error issued on 23 October 1962 by the United States Postal Service (then known as the Post...
    5 KB (522 words) - 01:49, 31 January 2025
  • An error (from the Latin errāre, meaning 'to wander') is an inaccurate or incorrect action, thought, or judgement. In statistics, "error" refers to the...
    18 KB (2,248 words) - 00:30, 11 April 2025
  • Thumbnail for Inverted Head 4 Annas
    multicolored stamps; the Basel Dove preceded it by nine years. However, an invert error occurred during production, showing the head "upside down." The Four...
    8 KB (938 words) - 20:23, 21 December 2024
  • Thumbnail for Postage stamps and postal history of New Zealand
    the country's rarest stamps is the 1904 Pictorial 4d Lake Taupo invert, an invert error made in 1904. It sold in 1998 for NZ$66,500. There is only one...
    9 KB (1,088 words) - 19:01, 4 April 2025
  • The "Nixon invert" is a reputed invert error of the Richard Nixon memorial postage stamp issued by the United States Postal Service in 1995. Originally...
    9 KB (1,097 words) - 22:31, 15 January 2025
  • Thumbnail for List of postage stamps
    Pan-American invert Inverted Jenny – The "upside-down airplane" Dag Hammarskjöld invertError deliberately mass-produced CIA invert – Modern error Statue...
    6 KB (572 words) - 00:50, 11 March 2024
  • Thumbnail for 1904 Pictorial 4d Lake Taupo invert
    The 1904 Pictorial 4d Lake Taupo invert is an invert error on a postage and revenue stamp issued by New Zealand which is considered to be the country's...
    3 KB (212 words) - 02:56, 8 September 2023
  • Thumbnail for Americana series
    philatelists, the Americana series is most famous for the CIA invert. An invert error of the $1 lamp stamp, it was so named because the original sheet...
    9 KB (1,325 words) - 15:24, 6 July 2024
  • Thumbnail for Error function
    error to about 0.00013. This approximation can be inverted to obtain an approximation for the inverse error function: erf − 1 ⁡ x ≈ sgn ⁡ x ⋅ ( 2 π a + ln...
    47 KB (7,328 words) - 08:39, 27 April 2025
  • Thumbnail for Pan-American invert
    possibility of errors. Three of the denominations, 1 cent, 2 cents and 4 cents, were printed in sheets on which the center vignette was inverted relative to...
    7 KB (772 words) - 12:10, 26 November 2024
  • algebra, an invertible matrix is a square matrix that has an inverse. In other words, if some other matrix is multiplied by the invertible matrix, the...
    46 KB (7,047 words) - 18:59, 3 May 2025
  • Thumbnail for Power inverter
    A power inverter, inverter, or invertor is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). The resulting...
    49 KB (6,511 words) - 12:30, 27 April 2025
  • Thumbnail for Black Swan (stamp)
    Australia's swan series of stamps, this was the first invert error, where the frame and center are inverted in relation to one another. In January 1855, a year...
    4 KB (410 words) - 19:21, 30 March 2025
  • of the inverted roots corresponds to the error locations (right to left, location 0 is the last term in the codeword). To calculate the error values,...
    75 KB (12,395 words) - 16:42, 29 April 2025
  • Thumbnail for Jamaica 1 shilling inverted-frame stamp error
    The Jamaica 1sh inverted-frame error was discovered in March 1922 at the post office in Manchioneal, a village in the parish of Portland, Jamaica. An entire...
    3 KB (202 words) - 22:43, 5 September 2022
  • surrounding appears to be a mirror image, possibly resulting from an invert error. The background shows a 45-degree angle labeled as 60 degrees. Accordingly...
    11 KB (974 words) - 13:13, 7 April 2025
  • Thumbnail for Inverted Dendermonde
    its centre inverted so that the depicted town hall is upside down. Most likely the cause of this error was similar to that of the Inverted Jenny of the...
    4 KB (605 words) - 20:13, 10 May 2025
  • In computer science, an inverted index (also referred to as a postings list, postings file, or inverted file) is a database index storing a mapping from...
    8 KB (875 words) - 15:30, 5 March 2025
  • Thumbnail for Airmail stamp
    have an invert error, known as the Inverted Jenny, because the airplane image in the centre is inverted relative to the outer frame. The error is one of...
    10 KB (928 words) - 21:24, 4 May 2025
  • Bayesian inference, an approach to statistical inference, where it is used to invert the probability of observations given a model configuration (i.e., the likelihood...
    49 KB (6,809 words) - 00:29, 26 April 2025
  • 2023-08-15. Retrieved 2023-10-17. "%BITNOT (Invert Bits)". www.ibm.com. 2023-04-11. Retrieved 2023-10-17. "Invert actual bits of a number". GeeksforGeeks...
    1 KB (131 words) - 21:30, 17 October 2023
  • Thumbnail for Blue screen of death
    the fact that they occur, thus inverting cause and effect by implying that the invention of BSoDs caused fatal errors to occur instead of their actual...
    46 KB (4,938 words) - 12:52, 10 May 2025
  • processing, a minimum mean square error (MMSE) estimator is an estimation method which minimizes the mean square error (MSE), which is a common measure...
    41 KB (9,310 words) - 10:14, 10 April 2025
  • United States no. "C3a" is instantly recognized as the Inverted Jenny, a rare airmail inverted error stamp. The contents for each of the twelve volumes (2021...
    11 KB (1,487 words) - 03:04, 13 December 2024