Discover and read the best of Twitter Threads about #Geometry
Most recents (14)
#geogram #geometry #programming
Hello darkness my old friend ...
Diving into exact triangle intersection code, that is exactly bugged !
Revisiting the whole approach, hopefully much much simpler in the end
Hello darkness my old friend ...
Diving into exact triangle intersection code, that is exactly bugged !
Revisiting the whole approach, hopefully much much simpler in the end
You may think that once you have exact predicates it is piece of cake, but there is a surprisingly long list of particular cases: trlgs can be in the same plane, touch along a vrtx, an edge, isect can be a single point, a segment, a little triangle, it can even be a hexagon !
Seeing some light at the end of the tunnel... Seems that a reasonably short program can handle all the cases (but it does not fit in the margin, euuu I mean in a tweet !)
Is Blender useful for Architecture? You bet! I use it daily. So how is it useful for architecture? 🧵⬇ #blender3d #blender #blenderarchitecture #architecture #futurly #architecturedesign #parametric #conceptdesign #geometry #tools
Blender has advanced polygonal modeling capabilities
Blender can be as precise or imprecise as you want it to be
⏳4592307816 Occurs at position 60 in π. It includes the ten numbers. 666 relating to 6x6x6=216. 216 relating to the diameter of the moon 2160 Miles. 351, 26th Triangular. 26 letters in the English alphabet. 60, a whole when taking about time. 22/7=3.14... 2083 the 314th prime⌛️
"Sixty Time" = 459! WOW!
Hence the absolute need to get out of this voluntary submission system established for at least 300 years.
If you have any suggestions, put them below.
Be creative & let's brainstorm together to perhaps allow us to break these chains of oppression.
#Psychologicalreactance
⛎
If you have any suggestions, put them below.
Be creative & let's brainstorm together to perhaps allow us to break these chains of oppression.
#Psychologicalreactance
⛎
#Naturopathy
#Herbalism
#Phytotherapy
#Nutraceuticals
#AilanthusAltissima (Mill.) Swingle, 1916
False Japanese varnish, Ailante, Ailanth
« Dwarf Ailanthus is also sometimes nicknamed "the tree of hell" because of its invasive nature and the difficulty of eradicating it. »
#Herbalism
#Phytotherapy
#Nutraceuticals
#AilanthusAltissima (Mill.) Swingle, 1916
False Japanese varnish, Ailante, Ailanth
« Dwarf Ailanthus is also sometimes nicknamed "the tree of hell" because of its invasive nature and the difficulty of eradicating it. »
#geometry #programming
New #geogram tutorial on surface reconstruction from #pointsets:
github.com/BrunoLevy/geog…
New #geogram tutorial on surface reconstruction from #pointsets:
github.com/BrunoLevy/geog…
Coming next:
- remeshing
- parameterization and texture mapping
- remeshing
- parameterization and texture mapping
Daily Bookmarks to GAVNet 12/18/2021 greeneracresvaluenetwork.wordpress.com/2021/12/18/dai…
Why the Biden Presidency Feels Like Such a Disappointment
nytimes.com/2021/12/09/opi…
#PartisanPolitics, #CongressionalMajority, #MidTermElections, #FederalBudget
nytimes.com/2021/12/09/opi…
#PartisanPolitics, #CongressionalMajority, #MidTermElections, #FederalBudget
Why cannabis reeks of skunk
nature.com/articles/d4158…
#cannabis, #odor, #ChemicalCompounds, #sulphur, #ScientificDiscovery
nature.com/articles/d4158…
#cannabis, #odor, #ChemicalCompounds, #sulphur, #ScientificDiscovery
What do we get if we take the unit circle x² + y² = 1 and complexify it? We get the 3D object (manifold) in 4D space given by the equation
z² + w² = 1
where z, w are complex numbers. Here's one way to see its #geometry. (A slowmo animation to follow.) #calculus
z² + w² = 1
where z, w are complex numbers. Here's one way to see its #geometry. (A slowmo animation to follow.) #calculus
Here is a slow animation of how circles of various radii (centered at the origin) are transformed by the complexified circle function. #math #geometry #calculus
N.B., the reason we see two disconnected loops for the image of circles of small radii is one loop corresponds to the + and other to the - choices in the function u(r,θ). (And, yes, the function w is analytic.)
1/3 | Catriona (@Cshearer41) de 🇬🇧 UK, siempre reta a sus seguidores a resolver problemas de #Geometría.
Me topé con uno interesante(por su rareza) que fue resuelto de varias formas, y aquí le propongo otras dos soluciones
#Geometry #Mathematics
Me topé con uno interesante(por su rareza) que fue resuelto de varias formas, y aquí le propongo otras dos soluciones
#Geometry #Mathematics
2/3 | Traza BH y FI perpendiculares a BF, luego CM tal que <CMF=BHI, luego se descubren los triángulos congruentes, y la región pedida se convierte en una región trapecial
#Geometry #Mathematics #Geometria
#Geometry #Mathematics #Geometria
3/3 Traza FH=6 perpendicular a BF, luego los triángulos BFC y JFG son congruentes y GJ resulta paralelo e igual a AB, y los triángulos ABH y GJH son congruentes, y la región pedida se convierte en una región triangular
#Geometry #Mathematics #Geometria
@threadreaderapp unroll
#Geometry #Mathematics #Geometria
@threadreaderapp unroll
Daily Bookmarks to GAVNet 12/01/2020 greeneracresvaluenetwork.wordpress.com/2020/12/01/dai…
A New AI Study May Explain Why Deep Learning Works | Psychology Today
psychologytoday.com/us/blog/the-fu…
#learning #deep #psychology
psychologytoday.com/us/blog/the-fu…
#learning #deep #psychology
Daily Bookmarks to GAVNet 07/27/2020 greeneracresvaluenetwork.wordpress.com/?p=6194
CT scans might offer a more accurate way to diagnose Covid-19 - STAT
statnews.com/2020/04/16/ct-…
#COVID19 #coronavirus #scans #testing
statnews.com/2020/04/16/ct-…
#COVID19 #coronavirus #scans #testing
Daily Bookmarks to GAVNet 7/02/2020-2
greeneracresvaluenetwork.wordpress.com/2020/07/02/dai…
Nathaniel Cline and Nathan Tankus: Fiscal Systems, Organizational Capacity, and Crisis: A Political Balance of Payments Approach
nakedcapitalism.com/2013/05/nathan…
#crisis #payments #balance #systems #capitalism #capacity
greeneracresvaluenetwork.wordpress.com/2020/07/02/dai…
Nathaniel Cline and Nathan Tankus: Fiscal Systems, Organizational Capacity, and Crisis: A Political Balance of Payments Approach
nakedcapitalism.com/2013/05/nathan…
#crisis #payments #balance #systems #capitalism #capacity
We might finally know why the coronavirus spread is out of control again
bgr.com/2020/06/30/cor…
#coronavirus #spread
bgr.com/2020/06/30/cor…
#coronavirus #spread
Did protests drive more Covid-19 cases? New research reveals a surprising answer
inverse.com/mind-body/covi…
#COVID19Cases #research #protests
inverse.com/mind-body/covi…
#COVID19Cases #research #protests
Daily Bookmarks to GAVNet 6/27/2020-2
greeneracresvaluenetwork.wordpress.com/2020/06/27/dai…
New Geometric Perspective Cracks Old Problem About Rectangles
quantamagazine.org/new-geometric-…
#geometry #perspective
greeneracresvaluenetwork.wordpress.com/2020/06/27/dai…
New Geometric Perspective Cracks Old Problem About Rectangles
quantamagazine.org/new-geometric-…
#geometry #perspective
Detecting Regions At Risk for Spreading COVID-19 Using Existing Cellular Wireless Network Functionalities - IEEE Journals & Magazine
ieeexplore.ieee.org/document/91170…
#detection #network #coronavirus #regions #wireless #cellular
ieeexplore.ieee.org/document/91170…
#detection #network #coronavirus #regions #wireless #cellular
greeneracresvaluenetwork.wordpress.com/2020/06/07/dai…
The 3-D Printer That Could Finally Change Manufacturing | MIT Technology Review
technologyreview.com/2017/04/25/485…
#printer #manufacturing #technology
The 3-D Printer That Could Finally Change Manufacturing | MIT Technology Review
technologyreview.com/2017/04/25/485…
#printer #manufacturing #technology
Thread by @isabelrodbar: Are SARS-CoV-2 seroprevalence estimates biased?
threadreaderapp.com/thread/1267195…
#estimates
threadreaderapp.com/thread/1267195…
#estimates
The Great Stagnation—or Decline and Fall? - Intercollegiate Studies Institute: Think. Live Free.
isi.org/modern-age/the…
#civilization #fall #decline
isi.org/modern-age/the…
#civilization #fall #decline
For any subset A of a topological space X, there are no more than 14 sets that can be formed from A using the closure and complement operations. The complement of B is B' = X-B. Closure C(B) = smallest closed set containing B. (Neat problem from Kelley's General #Topology.) #math
There's a lemma that helps one show this. Letting C(A) denote the closure of A, and N(A) the complement of A, we can prove:
Lemma: for all sets A, one has the equation
CNC N CNC(A) = CNC(A).
Lemma: for all sets A, one has the equation
CNC N CNC(A) = CNC(A).
The result follows from the semigroup with identity I generated by 2 elements N and C such that N² = I, C² = C, and CNCNCNC = CNC. Its 14 elements are:
I N C NC CN NCN CNC CNCN NCNC
NCNCN CNCNC CNCNCN NCNCNC NCNCNCN.
Should have nice matrix representation. #math
I N C NC CN NCN CNC CNCN NCNC
NCNCN CNCNC CNCNCN NCNCNC NCNCNCN.
Should have nice matrix representation. #math
