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  2. Pushforward (differential) - Wikipedia

    en.wikipedia.org/wiki/Pushforward_(differential)

    If a map, φ, carries every point on manifold M to manifold N then the pushforward of φ carries vectors in the tangent space at every point in M to a tangent space at every point in N. In differential geometry , pushforward is a linear approximation of smooth maps (formulating manifold) on tangent spaces.

  3. Center City, Philadelphia - Wikipedia

    en.wikipedia.org/wiki/Center_City,_Philadelphia

    Center City at night in May 2007 Logan Circle in 2011 Philadelphia City Hall at night in December 2012. Among Center City's neighborhoods and districts are Penn's Landing, Old City, Society Hill, South Street, Washington Square West, Market East, Chinatown, Logan Square, the Museum District (located along the Benjamin Franklin Parkway), Rittenhouse Square, Fitler Square, the Avenue of the Arts ...

  4. Vertical and horizontal bundles - Wikipedia

    en.wikipedia.org/wiki/Vertical_and_horizontal...

    Vertical and horizontal subspaces for the Möbius strip. The Möbius strip is a line bundle over the circle, and the circle can be pictured as the middle ring of the strip. . At each point on the strip, the projection map projects it towards the middle ring, and the fiber is perpendicular to the middle ri

  5. Map projection - Wikipedia

    en.wikipedia.org/wiki/Map_projection

    Distance from the tangent point on the map is proportional to straight-line distance through the Earth: r(d) = c sin ⁠ d / 2R ⁠ [38] Logarithmic azimuthal is constructed so that each point's distance from the center of the map is the logarithm of its distance from the tangent point on the Earth.

  6. Rank (differential topology) - Wikipedia

    en.wikipedia.org/wiki/Rank_(differential_topology)

    A differentiable map f : M → N is said to have constant rank if the rank of f is the same for all p in M. Constant rank maps have a number of nice properties and are an important concept in differential topology. Three special cases of constant rank maps occur. A constant rank map f : M → N is

  7. Tangent space - Wikipedia

    en.wikipedia.org/wiki/Tangent_space

    In mathematics, the tangent space of a manifold is a generalization of tangent lines to curves in two-dimensional space and tangent planes to surfaces in three-dimensional space in higher dimensions. In the context of physics the tangent space to a manifold at a point can be viewed as the space of possible velocities for a particle moving on ...

  8. Play Bubble Mouse Online for Free - AOL.com

    www.aol.com/games/play/masque-publishing/bubble...

    Bubble Mouse. Shoot bubbles to save the city from mischievous cats! Unlock 98 puzzles and 6 locations in this free addictive match 3 bubble saga, which includes power-ups, bubble ring mini-games ...

  9. Azimuthal equidistant projection - Wikipedia

    en.wikipedia.org/wiki/Azimuthal_equidistant...

    The azimuthal equidistant projection is an azimuthal map projection. It has the useful properties that all points on the map are at proportionally correct distances from the center point, and that all points on the map are at the correct azimuth (direction) from the center point. A useful application for this type of projection is a polar ...