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Does there exist an integerLet $0<i<8$ with the following property:

for any$R$ be a commutative unital ring and let $R$, there exists$i$ be a compact Hausdorff space $X$non-negative integer such that $KO^i(X)\approx K^i_{alg}(R)$?

P.S$K^i_{alg}(R)$ is finitely generated abelian group.: I am not sure if Is it matters but I dopossible that there does not particularly mind throwing in some finiteness hypothesesexist weak homotopy type of finite CW complex (say,$X$ such that $R$ is Noetherian).$KO^i(X)\approx K^i_{alg}(R)$?

Does there exist an integer $0<i<8$ with the following property:

for any commutative unital ring $R$, there exists a compact Hausdorff space $X$ such that $KO^i(X)\approx K^i_{alg}(R)$?

P.S.: I am not sure if it matters but I do not particularly mind throwing in some finiteness hypotheses (say, $R$ is Noetherian).

Let $R$ be a commutative unital ring and let $i$ be a non-negative integer such that $K^i_{alg}(R)$ is finitely generated abelian group. Is it possible that there does not exist weak homotopy type of finite CW complex $X$ such that $KO^i(X)\approx K^i_{alg}(R)$?

+at.algebraic-topology +algebraic-k-theory
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Arun Debray
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rori
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Comparing connective real topological K-theory and algebraic K-theory

Does there exist an integer $0<i<8$ with the following property:

for any commutative unital ring $R$, there exists a compact Hausdorff space $X$ such that $ko^i(X)\approx K^i_{alg}(R)$$KO^i(X)\approx K^i_{alg}(R)$?

P.S.: I am not sure if it matters but I do not particularly mind throwing in some finiteness hypotheses (say, $R$ is Noetherian).

Comparing connective real topological K-theory and algebraic K-theory

Does there exist an integer $0<i<8$ with the following property:

for any commutative unital ring $R$, there exists a compact Hausdorff space $X$ such that $ko^i(X)\approx K^i_{alg}(R)$?

P.S.: I am not sure if it matters but I do not particularly mind throwing in some finiteness hypotheses (say, $R$ is Noetherian).

Comparing real topological K-theory and algebraic K-theory

Does there exist an integer $0<i<8$ with the following property:

for any commutative unital ring $R$, there exists a compact Hausdorff space $X$ such that $KO^i(X)\approx K^i_{alg}(R)$?

P.S.: I am not sure if it matters but I do not particularly mind throwing in some finiteness hypotheses (say, $R$ is Noetherian).

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rori
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rori
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rori
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rori
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