# Need start aid ! Simple system of difference equations

**URL:** <https://discourse.julialang.org/t/need-start-aid-simple-system-of-difference-equations/82299>\
**Category:** New to Julia\
**Tags:** question, diffeq, simulations\
**Created:** [June 6, 2022, 10:28am UTC](https://discourse.julialang.org/t/need-start-aid-simple-system-of-difference-equations/82299 "2022-06-06T10:28:21Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ArminAminian](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/arminaminian/32/36952_2.png) [@ArminAminian](https://discourse.julialang.org/u/ArminAminian)\
**Post date:** [June 6, 2022, 10:28am UTC](https://discourse.julialang.org/t/need-start-aid-simple-system-of-difference-equations/82299/1 "2022-06-06T10:28:21Z")

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Hi,

I want to transfer a model from Mathamtica to Julia but I am a complete newbe. So far I could not find any codes that helped me.

Mathematically, it is a system of difference equations / dynamical system in discrete time. Maybe, someone could give me start-up support and tell me how to put the equations here in Julia language. I would be very very thankful!

Best Armin 🙂

 ![01](https://global.discourse-cdn.com/julialang/original/3X/b/6/b63bd4fa147a33104e47eb68d569514b24b6a7e1.png)

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**Author:** ![ChrisRackauckas](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/chrisrackauckas/32/77_2.png) [@ChrisRackauckas](https://discourse.julialang.org/u/ChrisRackauckas)\
**Post date:** [June 6, 2022, 10:31am UTC](https://discourse.julialang.org/t/need-start-aid-simple-system-of-difference-equations/82299/2 "2022-06-06T10:31:19Z")

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For now, just write the loop out yourself for this. State space models is coming in [GitHub - SciML/DifferenceEquations.jl: Solving difference equations with DifferenceEquations.jl and the SciML ecosystem.](https://github.com/SciML/DifferenceEquations.jl) rather soon, but right now DifferenceEquations.jl is not ready for prime time (but if you wish to contribute etc. then you’re more than welcome to)