enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Sparse matrix - Wikipedia

    en.wikipedia.org/wiki/Sparse_matrix

    The CSR format has been in use since at least the mid-1960s, with the first complete description appearing in 1967. [7] The CSR format stores a sparse m × n matrix M in row form using three (one-dimensional) arrays (V, COL_INDEX, ROW_INDEX). Let NNZ denote the number of nonzero entries in M. (Note that zero-based indices shall be used here.)

  3. Digital Signature Algorithm - Wikipedia

    en.wikipedia.org/wiki/Digital_Signature_Algorithm

    The Digital Signature Algorithm (DSA) is a public-key cryptosystem and Federal Information Processing Standard for digital signatures, based on the mathematical concept of modular exponentiation and the discrete logarithm problem. In a public-key cryptosystem, a pair of private and public keys are created: data encrypted with either key can ...

  4. Elliptic Curve Digital Signature Algorithm - Wikipedia

    en.wikipedia.org/wiki/Elliptic_Curve_Digital...

    Note that an invalid signature, or a signature from a different message, will result in the recovery of an incorrect public key. The recovery algorithm can only be used to check validity of a signature if the signer's public key (or its hash) is known beforehand.

  5. Digital signature - Wikipedia

    en.wikipedia.org/wiki/Digital_signature

    A digital signature is an authentication mechanism that enables the creator of the message to attach a code that acts as a signature. The Digital Signature Algorithm (DSA), developed by the National Institute of Standards and Technology, is one of many examples of a signing algorithm. In the following discussion, 1 n refers to a unary number.

  6. Digital subtraction angiography - Wikipedia

    en.wikipedia.org/wiki/Digital_subtraction...

    Digital subtraction angiography (DSA) is a fluoroscopy technique used in interventional radiology to clearly visualize blood vessels in a bony or dense soft tissue environment. Images are produced using contrast medium by subtracting a "pre-contrast image" or mask from subsequent images, once the contrast medium has been introduced into a ...

  7. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    HTML Form format HTML 4.01 Specification since PDF 1.5; HTML 2.0 since 1.2 Forms Data Format (FDF) based on PDF, uses the same syntax and has essentially the same file structure, but is much simpler than PDF since the body of an FDF document consists of only one required object. Forms Data Format is defined in the PDF specification (since PDF 1.2).

  8. Democratic Socialists of America - Wikipedia

    en.wikipedia.org/wiki/Democratic_Socialists_of...

    DSA made no endorsement in the 2024 general presidential race. DSA members expressed split views on West's campaign despite widespread admiration for him, with some citing controversies within the People's Party or the potential for a spoiler effect, and others arguing the campaign could be an opportunity to make socialist ideas more visible.

  9. Oral exam - Wikipedia

    en.wikipedia.org/wiki/Oral_exam

    The viva voce is a component of music diploma examinations administered by ABRSM, Trinity College of Music and London College of Music. Candidates are posed a series of questions by the examiner about their chosen pieces, the composer and musical era. Depending on exam board, candidates may also be required to do a short writeup on their pieces.