1. The fibre–sum of graphsIrene Sciriha, 2026 Opis: The operation of fibre–sum, well known in topology as connected sum, joins two given manifolds together, along identical submanifolds. Analogously, the fibre–sum Z of two labelled connected root graphs H₁ and H₂ is obtained by gluing the two root graphs along a common subgraph G. For z₁ ∈ H₁ and z₂ ∈ H₂, G is identical to the vertex–deleted subgraphs H₁ − z₁ and H₂ − z₂ of H₁ and H₂ respectively. The fibre–sum of H₁ and H₂ may be considered as a perturbation of their 0–1–adjacency matrix. We show that the operation is key to establishing the sufficient conditions for the uniqueness of H₁( ≃ H₂), when constructed from G. The structural constraints in the fibre–sum restrict the types of terminal vertices z₁ and z₂ in the fibre–sum, edged fibre–sum and their associated root graphs, giving rise to molecular electronic devices with specific conductivity behaviour.
Ključne besede: fibre-sum, eigenvalue perturbation, common eigenvector, μ-core vertices, vertex deletion
Objavljeno v RUP: 07.10.2026; Ogledov: 143; Prenosov: 10
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4. Začasna raba prostora kot urbana učna infrastruktura : primerjalna analiza dveh primerov v LjubljaniTina Cotič, 2026, samostojni znanstveni sestavek ali poglavje v monografski publikaciji Ključne besede: začasna raba prostora, degradirana urbana območja, urbana učna infrastruktura, urbano učenje, poučevanje izven učilnice, urbana regeneracija, Onkraj gradbišča, Krater, Ljubljana
Objavljeno v RUP: 01.10.2026; Ogledov: 173; Prenosov: 7
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