Template:Moser spindle visual proof.svg

In today's world, Template:Moser spindle visual proof.svg occupies a central place in society, whether on a personal, political, social or cultural level. Its importance lies in its influence on different aspects of daily life, as well as its role in history and human development. Over time, Template:Moser spindle visual proof.svg has been the subject of debate, study and reflection, generating conflicting opinions and passionate discussions. From its impact on the economy to its role in individual identity, Template:Moser spindle visual proof.svg has proven to be a topic of universal interest that invites us to reflect on who we are and where we are headed. In this article, we will explore the various facets of Template:Moser spindle visual proof.svg, analyzing its meaning and its impact on the world today.
Proof without words that the chro­ma­tic number of a plane is at least 4:
Each edge is of unit length.
As vertices of each triangle is connected to one another, they must be coloured differently. The top and bottom vertices of each lozenge can be the same colour.
However, the bottom edge connecting the bottom vertices (purple) connects two vertices of the same colour, proving the impossibilty of a 3-colouring.