3.10.3 Can you answer these questions?

3.10.3.1 Creating notebooks with specific options being editable but not saveable

http://mathematica.stackexchange.com/questions/125676/creating-notebooks-with-specific-options-being-editable-but-not-saveable

 
The goal 
 
is to create a notebook whose options, when the notebook is opened, are fixed regardless of edits done to the notebook. 
 
E.g. WindowSize -> Automatic and WindowMargins -> 30 should be  ...
 

- asked by Kuba 8votes

3.10.3.2 Possible bug with Dataset formatting for incompatible shapes and Missing

http://mathematica.stackexchange.com/questions/125689/possible-bug-with-dataset-formatting-for-incompatible-shapes-and-missing

 
Bug introduced in 11.0.0 
 
 
 
The problem: 
 
{<|"a" -> Range[5]|>, <|"a" -> Missing["KeyAbsent", "a"]|>} // Dataset 
 
 
 
 
 
 
More detailed example shows that 5 is the magic number and  ...
 

- asked by Kuba 10votes

3.10.3.3 TensorContract applied twice

http://mathematica.stackexchange.com/questions/125588/tensorcontract-applied-twice

 
I have a very simple question about TensorContract command: 
I'm declaring 
 
$Assumptions = {T \[Element] Arrays[{4, 4, 4, 4}], a \[Element] Arrays[{4, 4}], b \[Element] Arrays[{4, 4}]}; 
 
 
so T is a  ...
 

- asked by MaPo 3votes

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