Partial homogenization conjecture for adaptive weight systems

Consider the SDE system with coefficients satisfying Assumption~ and ϵ=1\epsilon=1. For k∈Nk\in\mathbb{N}, let deterministic initial data (Xi(k)(0))i∈[Nk](X^{(k)}_i(0))_{i\in[N_k]} and (wi,j(k)(0))i,j∈[Nk](w^{(k)}_{i,j}(0))_{i,j\in[N_k]} satisfy Assumption~, and suppose

lim⁡k→∞sup⁡k1,k2≥kγW1,□(((Xi(k1)(0))i∈[Nk1],(wi,j(k1)(0))i,j∈[Nk1],[Nk1]),((Xi(k2)(0))i∈[Nk2],(wi,j(k2)(0))i,j∈[Nk2],[Nk2]))=0.\lim_{k\to\infty}\sup_{k_1,k_2\geq k}\gamma_{W_1,\square}\bigg(\Big((X^{(k_1)}_i(0))_{i\in[N_{k_1}]},(w^{(k_1)}_{i,j}(0))_{i,j\in[N_{k_1}]},[N_{k_1}]\Big),\Big((X^{(k_2)}_i(0))_{i\in[N_{k_2}]},(w^{(k_2)}_{i,j}(0))_{i,j\in[N_{k_2}]},[N_{k_2}]\Big)\bigg)=0.

Partial homogenization conjecture. If the corresponding solutions of are denoted by (Xi(k)(t))i∈[Nk](\bm{X}^{(k)}_i(t))_{i\in[N_k]} and (wi,j(k)(t))i,j∈[Nk](\bm{w}^{(k)}_{i,j}(t))_{i,j\in[N_k]}, then

lim⁡t→∞lim sup⁡k→∞sup⁡k1,k2≥kE[δW1,□(((Xi(k1)(t))i∈[Nk1],(wi,j(k1)(t))i,j∈[Nk1],[Nk1]),((Xi(k2)(t))i∈[Nk2],(wi,j(k2)(t))i,j∈[Nk2],[Nk2]))]=0.\lim_{t\to\infty}\limsup_{k\to\infty}\sup_{k_1,k_2\geq k}\mathbb{E}\bigg[\delta_{W_1,\square}\bigg(\Big((\bm{X}^{(k_1)}_i(t))_{i\in[N_{k_1}]},(\bm{w}^{(k_1)}_{i,j}(t))_{i,j\in[N_{k_1}]},[N_{k_1}]\Big),\Big((\bm{X}^{(k_2)}_i(t))_{i\in[N_{k_2}]},(\bm{w}^{(k_2)}_{i,j}(t))_{i,j\in[N_{k_2}]},[N_{k_2}]\Big)\bigg)\bigg]=0.

The claim predicts that initial data asymptotically indistinguishable in the weaker metric become indistinguishable in the stronger metric at long times, expressing partial homogenization of the weight structures.

References

Primary source

Datong Zhou, “Non-exchangeable mean-field theory for adaptive weights: propagation of dissociatedness and graphon sampling lemma”, arXiv:2506.13587 (2025).

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