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Can some describe to me the basic algebra of three-way arrays?
matt grime said:Look up three dimensional tensors, since that is probably what you want.
mathwonk said:maybe your book just meant that 3 dimesnional matrcies are harder to write on the page. clearly if you have a 3 diemnsional array of numbers laid out on the coordinate points of the unit cube in x,y,z space, then given a vector, you could dot it with saty all the vertical vectors in the cube and get a square matrix, i.e. tensor of type (1,1). thus such an array would be a linear map from vectors to tensors of type (1,1), hence itself a tensor.
A three-way array, also known as a three-dimensional array or a three-dimensional matrix, is a mathematical concept that represents data in three dimensions. It is similar to a two-way array, which is commonly used in spreadsheets, but includes an additional dimension for greater complexity.
A three-way array is typically represented using a set of three axes, similar to a three-dimensional graph. One axis represents the rows, another represents the columns, and the third represents the "depth" or layers of data.
Three-way arrays are commonly used in scientific and mathematical research to represent complex data sets with multiple variables. They allow for more accurate analysis and visualization of data compared to traditional two-dimensional arrays.
To perform basic algebra operations on a three-way array, you will first need to understand how the data is organized and how to access specific values within the array. From there, you can use standard algebraic equations and formulas to manipulate the data as needed.
Yes, three-way arrays have a wide range of practical applications in fields such as physics, chemistry, biology, and engineering. They are often used in data analysis, modeling, and simulations to solve complex problems and make predictions based on multiple variables.