8,969 research outputs found
Residually finite groups / Lim Hui Min
No full textIn this thesis, we will study a stronger residually finite property called weak potency. More precisely, we aim to study the weak potency of HNN extensions and generalised free products of weakly potent groups and the main tools we used are lters.
First we study the weak potency of HNN extensions by introducing the concept of h-filters and then use it to prove the main criterion. Then we prove several characterisations for the weak potency of certain HNN extensions with cyclic associated subgroups as well as a characterisation for the Baumslag-Solitar groups. Next, we will also apply our results to HNN extensions of finitely generated nilpotent groups. We shall give characterisations for certain HNN extensions of characteristically weakly potent groups with finitely generated central associated subgroups and HNN extensions of free abelian groups of finite rank to be weakly potent.
In the last part we study the weak potency of generalised free products. Werst introduce w-filter and prove a criterion for generalised free products to be weakly potent. By using it, we then give characterisations for the weak potency of generalised free products with cyclic amalgamated subgroups and with central amalgamated subgroups. Then we extend the results to tree products of finitely many groups. Finally we show that certain one-relator groups with torsion are weakly potent
Rasbora kottelati Lim 1995
No full textRasbora kottelati Lim, 1995 BE Rasbora kalochroma (non-Bleeker): Eden, 1984: 186 (common in small streams and ditches of the coastal swamp forest areas in the Belait district). Rasbora kottelati Lim, 1995: 66 (Belait district: Seria); Parenti & Meisner, 2003: 43 (upper, middle and lower Belait); Sulaiman & Shahdan, 2003: 64 (Tasek Merimbun); Sulaiman & Shahdan, 2007: 24 (Tasek Merimbun).Published as part of Sulaiman, Zohrah, Hui, Tan Heok & Lim, Kelvin Kok Peng, 2018, Annotated checklist of freshwater fishes from Brunei Darussalam, Borneo in Zootaxa 4379 (1), DOI: 10.11646/zootaxa.4379.1.2, http://zenodo.org/record/117231
First record of Encheloclarias (Teleostei: Clariidae) from Brunei Darussalam with notes on the taxonomic status of E. baculum Ng & Lim, 1993, and E. prolatus Ng & Lim, 1993
No full textTan, Heok Hui, Sukri, Rahayu Sukmaria, Kahar, Rafhiah, Dommain, René (2023): First record of Encheloclarias (Teleostei: Clariidae) from Brunei Darussalam with notes on the taxonomic status of E. baculum Ng & Lim, 1993, and E. prolatus Ng & Lim, 1993. Raffles Bulletin of Zoology 71: 237-247, DOI: 10.26107/RBZ-2023-001
Annotated checklist of freshwater fishes from Brunei Darussalam, Borneo
No full textSulaiman, Zohrah, Hui, Tan Heok, Lim, Kelvin Kok Peng (2018): Annotated checklist of freshwater fishes from Brunei Darussalam, Borneo. Zootaxa 4379 (1), DOI: 10.11646/zootaxa.4379.1.
Fig. 7. Encheloclarias baculum, ZRC 63817, 82.0 in First record of Encheloclarias (Teleostei: Clariidae) from Brunei Darussalam with notes on the taxonomic status of E. baculum Ng & Lim, 1993, and E. prolatus Ng & Lim, 1993
No full textFig. 7. Encheloclarias baculum, ZRC 63817, 82.0 mm SL, live colouration (Brunei: Badas) (Photograph: THH).Published as part of Tan, Heok Hui, Sukri, Rahayu Sukmaria, Kahar, Rafhiah & Dommain, René, 2023, First record of Encheloclarias (Teleostei: Clariidae) from Brunei Darussalam with notes on the taxonomic status of E. baculum Ng & Lim, 1993, and E. prolatus Ng & Lim, 1993, pp. 237-247 in Raffles Bulletin of Zoology 71 on page 243, DOI: 10.26107/RBZ-2023-0018, http://zenodo.org/record/781600
Osphronemus septemfasciatus Roberts 1992
No full textOsphronemus septemfasciatus Roberts, 1992 BE Osphronemus septemfasciatus Roberts, 1992: Kottelat & Lim, 1995: 248 (Belait district); Parenti & Meisner, 2003: 47 (upper Belait).Published as part of Sulaiman, Zohrah, Hui, Tan Heok & Lim, Kelvin Kok Peng, 2018, Annotated checklist of freshwater fishes from Brunei Darussalam, Borneo in Zootaxa 4379 (1), DOI: 10.11646/zootaxa.4379.1.2, http://zenodo.org/record/117231
Trichopodus pectoralis Regan 1910
No full textTrichopodus pectoralis Regan, 1910 IN Trichogaster pectoralis (Regan, 1910): Kottelat & Lim, 1995: 249 (Tutong district, introduced); Sulaiman & Shahdan, 2003: 66 (Tasek Merimbun); Sulaiman & Shahdan, 2007: 30 (Tasek Merimbun).Published as part of Sulaiman, Zohrah, Hui, Tan Heok & Lim, Kelvin Kok Peng, 2018, Annotated checklist of freshwater fishes from Brunei Darussalam, Borneo in Zootaxa 4379 (1), DOI: 10.11646/zootaxa.4379.1.2, http://zenodo.org/record/117231
Pangio agma
No full textPangio agma (Burridge, 1992) BE Acanthophthalmus agmus Burridge, 1992: 180 (Belait district: tributary of Sungai Belait). Pangio agma (Burridge, 1992): Kottelat & Lim, 1993: 205 (Tutong district: Sungai Barun); Kottelat & Whitten, 1993: 60 (Brunei); Kottelat & Lim, 2003: 237 (Tutong district); Parenti & Meisner, 2003: 43 (upper and middle Belait).Published as part of Sulaiman, Zohrah, Hui, Tan Heok & Lim, Kelvin Kok Peng, 2018, Annotated checklist of freshwater fishes from Brunei Darussalam, Borneo in Zootaxa 4379 (1), DOI: 10.11646/zootaxa.4379.1.2, http://zenodo.org/record/117231
Glyptothorax major
No full textGlyptothorax major (Boulenger, 1894) BE Glyptothorax major (Boulenger, 1894): Choy & Chin, 1994: 769 (Belalong-Temburong basin upstream of Kuala Belalong); Kottelat & Lim, 1995: 242.Published as part of Sulaiman, Zohrah, Hui, Tan Heok & Lim, Kelvin Kok Peng, 2018, Annotated checklist of freshwater fishes from Brunei Darussalam, Borneo in Zootaxa 4379 (1), DOI: 10.11646/zootaxa.4379.1.2, http://zenodo.org/record/117231
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