linux - Install Mathematica 11.3 on 32bit Lubuntu 18.04 not work default to 64bit version

I'm recently installing Mathematica 11.3 on my 32bit Lubuntu 18.04.

The installer installs 64bit version of Mathematica in default, so I can not run the installed version.

Below is the error output of the installer:

WARNING: Failed to install WolframScript system integration.  See
/tmp/WolframScript-InstallErrors-8297 for more details.

But the error log file listed is empty when I cat it.

Below is the output when I run mathematica:

$ mathematica
can not find /usr/local/Wolfram/Mathematica/11.3/SystemFiles/FrontEnd/Binaries/Linux/Mathematica

There is not a directory named Linux, but a directory named Linux-x86-64.

After consulting the system requirement page , I'm sure that Mathematica 11.3 can run on 32bit Linux. But they only tested it on Ubuntu 12.04–17.10, not on Ubuntu 18.04.

So my question is:

Is it possible that Mathematica 11.3 can not install correctly on 32bit Lubuntu 18.04?

What compatibility library do I need to correctly install the 32bit version?

Is there some option in the command line that I can use to choose the 32bit instead of the default 64bit version?

My system settings are as follows:

$ uname -a 

Linux **** 4.15.0-12-generic #13-Ubuntu SMP Thu Mar 8 06:23:34 UTC 2018 i686 i686 i686 GNU/Linux

$ lsb_release -a 
LSB Version:    core-9.20170808ubuntu1-noarch:security-9.20170808ubuntu1-    noarch
Distributor ID: Ubuntu
Description:    Ubuntu Bionic Beaver (development branch)
Release:    18.04

Codename: bionic

Answer

As of version 11.3.0, support for 32-bit Linux has been discontinued.

Only 64-bit Linux is supported, and the system requirements page has now been updated to reflect that

http://www.wolfram.com/mathematica/system-requirements.html

Additionally, I sent in a bug report since I believe the installer should have refused to run on a 32-bit system in the first place.

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