For dealing with uncertainties researchers introduced the concept of soft sets.
In this paper, a new class of soft sets called soft delta pre ideal open sets in soft ideal topological
space related to the notion of soft pre ideal regular pre ideal open sets is introduced.
Also, some new soft separation axioms based on the soft delta pre ideal open sets are
investigated.

In this paper, some characterizations of fuzzifying strong compactness
are given, including characterizations in terms of nets and presubbases.
Several characterizations of locally strong compactness in
the framework of fuzzifying topology are introduced and the mapping
theorems are obtained.

In this paper, the notions of (concave) (L, M)-fuzzy interior operators are introduced. It
is proved that the category of (L, M)-fuzzy concave spaces and the category of concave
(L, M)-fuzzy interior spaces is isomorphic, and there is aGalois correspondence between the
category of (L, M)-fuzzy concave spaces and the category of (L, M)-fuzzy interior spaces. In
addition, (L, M)-fuzzy hull operators proposed by Sayed et al. (Filomat 33(13):4151–4163,
2019) are further studied. Particularly, some results in Sayed et al. (2019) are corrected.

In the present paper, we introduce and study the continuity and some properties for a set equipped with a
transitive binary relation which we call t-set. Also, we give a characterization of a continuous directed complete posets via continuous t-sets. Furthermore, some properties of algebraic t-sets are considered. Our work is inspired by the slogan: "Order theory is the study of transitive relations" due to Abramsky and Jung [1]. The corresponding results of our results due to Nino-Salcedo [8], Heckmann [4] and Zhang [11] are generalized.

In this paper, two types of soft sets in soft ideal topological spaces
are introduced and some of their properties are discussed. The concept
of soft condense ideals is characterized by these collections of sets.
Also, some properties of soft extremally disconnected spaces are investigated.
Furthermore, decompositions of some types of soft continuous
mappings are given and some equivalent conditions concerning this
topic are established here.

Sodium diethyldithiocarbamate trihydrate (NaEt₂dtc·3H₂O) and sodium piperidine dithiocarbamate monohydrate (NaPidtc·H₂O) reacted with thallium(I) carbonate to produce the complexes [Tl₂(Et₂dtc)₂] C1 and [Tl₂(Pidtc)₂] C2. X-ray crystallographic analysis of the complexes elucidated their triclinic P-1 and monoclinic P2₁/n space groups, respectively, in addition to chelation via SS atoms from the uninegative ligands. Further, this analysis revealed the complexes' assembly as one-dimensional polymers of dimeric building blocks. The complexes (50 µg/ml) caused greater growth inhibitions in two pathogenic yeasts comparing with the ligand salts and cycloheximide. The ligand salts, respectively, inhibited R. glutinis with 15.02 and 15.14 % and C. tropicalis with 11.09 and 11.45 %, while cycloheximide, C1 and C2 offered inhibitions with 26.16, 38.9 and 46.4 % in R. glutinis and 13.4, 29.8 and 38.9 % in C. tropicalis, respectively. Further, the thallium complexes significantly affected the yeasts' soluble proteins {cycloheximide, C1 and C2 afforded 7.06 ± 0.05, 6.11 ± 0.08 and 5.43 ± 0.05 mg/g fresh weight (for R. glutinis) and 7.67 ± 0.15, 7.26 ± 0.06 and 6.025 ± 0.14 mg/g fresh weight (for C. tropicalis)} and total antioxidants {cycloheximide, C1 and C2 afforded 10.15 ± 0.21, 11.27 ± 0.16 and 14.97 ± 1.3 mg/g protein (for R. glutinis) and 19.4 ± 0.65, 16.0 ± 0.24 and 17.19 ± 0.55 mg/g protein (for C. tropicalis)} in addition to the catalase and peroxidase enzyme activities.

High-resolution quantitative analysis of the benthonic foraminifera throughout the K–Pg boundary interval on four sections (Wadi Nukhul, Abu Qada, Thamad, and Sudr Al Hitan) in south Sinai, Egypt was conducted. Planktonic foraminiferal biostratigraphy indicates a complete K–Pg boundary interval in W. Nukhul section, while minor hiatuses characterized the other sections. Benthonic foraminifera reflect outer neritic-upper bathyal setting for the studied interval, while outer neritic setting marks the latest Maastrichtian. The upper Maastrichtian assemblage indicates mesotrophic to slightly eutrophic marine conditions. At the K–Pg boundary in W. Nukhul, benthonic foraminifera display a significant turnover. A major change in the benthonic foraminifera assemblage which is marked by a decrease in the infaunal taxa and buliminids indicates a shortage in the food supply to the sea floor at the K–Pg boundary. This pattern was associated with increased abundance of the epifaunal taxa indicating oligotrophic conditions that linked to the food web collapse due to extinction of the marine primary producers. A partial recovery of the benthonic foraminifera was observed in the early Danian (Pα and lower part of P1a zones). A comparison between the data of the present study and other K–Pg boundary sites in the Tethyan realm indicates a similar shortage in the food supply with no oxygen deficiency. Two third-order sequences were identified in the studied interval based on the biotic attributes of the fauna. The obtained sea level curve was compared to the global sea level curve.