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YCor
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Definition of S-Reducibilityreducibility and Reducibilityreducibility of a Spacespace

I was going through this paper by Tanaka but I am stuck at the Proposition 4.1 given below enter image description here. I just cannot make sense of the first two lines of the proof. What does it mean when he says S-reducible and reducible? I tried searching online also but could not find anything, nor does the author refer to anything.

Can someone help me with this?

Thanks and regards in advance.

Definition of S-Reducibility and Reducibility of a Space

I was going through this paper by Tanaka but I am stuck at the Proposition 4.1 given below enter image description here. I just cannot make sense of the first two lines of the proof What does it mean when he says S-reducible and reducible? I tried searching online also but could not find anything, nor does the author refer to anything.

Can someone help me with this?

Thanks and regards in advance.

Definition of S-reducibility and reducibility of a space

I was going through this paper by Tanaka but I am stuck at Proposition 4.1 given below enter image description here. I just cannot make sense of the first two lines of the proof. What does it mean when he says S-reducible and reducible? I tried searching online also but could not find anything, nor does the author refer to anything.

Can someone help me with this?

Thanks and regards in advance.

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Devendra Singh Rana
Devendra Singh Rana
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Definition of S-Reducibility and Reducibility of a Space

I was going through this paper by Tanaka but I am stuck at the Proposition 4.1 given below enter image description here. I just cannot make sense of the first two lines of the proof What does it mean when he says S-reducible and reducible? I tried searching online also but could not find anything, nor does the author refer to anything.

Can someone help me with this?

Thanks and regards in advance.