Hjelmslev transformation is a technique used to simplify really complicated mathematical problems. It was first developed by Louis Hjelmslev, a Danish mathematician. Basically, it works by taking a complicated mathematical problem and breaking it down into simpler parts, which makes it easier to solve. Basically, it is like taking a puzzle and breaking it into pieces that are easier to put together. It is also like taking a jigsaw puzzle and breaking it into smaller pieces that you can more easily put together.