- #1
ehrenfest said:But in the triangle you can join AB, BC, or AC, right? Why are there not three ways?
ehrenfest said:So, if I understand this right, it is really the maximum number of non-intersecting line segments that you can draw in the circle each of which joins two vertices, right?
ehrenfest said:Wait. T_3 = 5 means that it is possible to draw five such lines, but that is impossible since there are a maximum of two disjoint pairs of vertices--so there can only be two such lines! I mean that in ABCDE, you can take two pairs of letters and lines between them, and then there is nothing else you can do since there is only one letter left!
Dick said:I think the sense of the problem is that you just keep drawing segments until you can't draw any more without crossing another. In the n=3 case (pentagon) you connect the consecutive vertices to get the pentagon and then you can draw two more interior diagonals. However you do this one vertex has four edges attached to it. There are five choices for this vertex, so T_3=5.
So, T_1 (triangle) = 1 because there is one way to draw internal vertices i.e. drawing none at all?Dick said:No, I would say T_2 (square)=2. Because there are two different internal diagonals to draw. I don't think that's what Halls meant. The vertices are distinguishable. The order in which you choose them to draw isn't.
HallsofIvy said:[itex]T_1[/itex] is "the number of ways it is possible to join the vertices of a triangle (1+ 2= 3 vertices) in pairs so that they do not intersect each other". We can connect two vertices by drawing a side of the triangle. If we drew another side, it would have to intersect the first at an endpoint so we can draw only one line. [itex]T_2[/itex] would be the number of ways we can connect the vertices of a square so that they do not connect: [itex]T_2= 2[/itex] as the formula said because we can draw to parallel sides that do not connect.
T_1 is a symbol commonly used in mathematical equations and scientific research. It represents a variable or parameter that can take on different values depending on the context.
When T_1 is set equal to 1, it means that the variable or parameter represented by T_1 has a specific value of 1 in the given equation or experiment. This value may be chosen arbitrarily or based on previous research and data.
The value of T_1 = 1 is determined through various methods such as experimentation, mathematical calculations, or statistical analysis. It depends on the specific research question and the variables involved.
T_1 = 1 is significant in a scientific context as it represents a specific value that can help researchers to make predictions, draw conclusions, and understand the relationship between variables in a given system or experiment.
Yes, the meaning of T_1 = 1 can vary depending on the context in which it is used. It is important for scientists to clearly define and explain the variables and parameters they use in their research to avoid confusion and ensure accurate interpretation of their findings.