By Gorin E.A.

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**Extra resources for Algebraic equations in commutative Banach algebras and related questions**

**Example text**

For example, particular cues are employed, when watching a television news program. These relate to the form of the content or its genre and thus indicate important information about the type of message that is being communicated and, therefore, about the way in which such a text is to be interpreted. This could easily be applied to the analysis of urban screens in the built environment. On one level, they occur as large television screens. Add to this that, in the majority of cases, these screens are frequently used for broadcasting national media content and news output in particular – such that there are speciﬁc cues in the text that are given in the sense that they have become transparent.

Perception of a single wireless node in public space The second stage of the study seeks to understand in more detail the nature of perception of the spatial presence of a single Wi-Fi node. Wireless access is structured around nodes which are the point at which a person actually accesses the network, and are literally devices that have a physical location. Yet in terms of their presence in space they may be viewed through an interface which shows the presence of all available nodes, but are rarely present in the sense that they can be seen with the eye.

This can be extended towards the relational aspect of spatial proximity, where concepts of closeness and remoteness are grounded. Bounded-ness The idea that space has extents which are not inﬁnite affects how structures of spatial separation and constraints are understood. Space is typically conceived as having some form of deﬁnable extent, which enables it to be subdivided in a range of ways into units with particular properties. Out of such concepts arise sociological frameworks such as territory, neighbourhood and even personal space.