Final answer:
The Unified portal theme in Gothic architecture includes repeated sculptural elements such as those found in the tympanum and archivolts which help convey the architectural themes.
Step-by-step explanation:
The question refers to the elements included in the Unified portal theme within the context of Gothic architecture. Particularly, it seems to be asking about the visual components that make up the entrance of a Gothic church, as illustrated by the sculptures in the tympanum and the archivolts. Expressing themes in architecture often involves repeating certain elements that convey the thematic message.
The repetition of sculptural elements in places like the tympanum can point towards an overarching theme. In terms of identifying if there is more than one theme, studying the presence of recurring motifs, symbols, and narratives within these sculptures can provide insights into the multitude of themes a single architectural structure might convey. To fully understand and elucidate these themes, one must consider the visual storytelling, cultural context, and historical significance of the artworks present in the architectural design.