Department of

# Mathematics

Seminar Calendar
for events the day of Tuesday, April 27, 2021.

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events for the
events containing

Questions regarding events or the calendar should be directed to Tori Corkery.
      March 2021             April 2021              May 2021
Su Mo Tu We Th Fr Sa   Su Mo Tu We Th Fr Sa   Su Mo Tu We Th Fr Sa
1  2  3  4  5  6                1  2  3                      1
7  8  9 10 11 12 13    4  5  6  7  8  9 10    2  3  4  5  6  7  8
14 15 16 17 18 19 20   11 12 13 14 15 16 17    9 10 11 12 13 14 15
21 22 23 24 25 26 27   18 19 20 21 22 23 24   16 17 18 19 20 21 22
28 29 30 31            25 26 27 28 29 30      23 24 25 26 27 28 29
30 31


Tuesday, April 27, 2021

1:00 pm in Zoom (email Philipp Hieronymi),Tuesday, April 27, 2021

#### To Be Announced

###### Eion Blanchard (Illinois)

Abstract: TBA

2:00 pm in Zoom Meeting (email daesungk@illinois.edu for info),Tuesday, April 27, 2021

#### To Be Announced

###### Wenqing Hu (Missouri University of Science and Technology)

4:00 pm in Zoom,Tuesday, April 27, 2021

#### Compositions as Trans-Scalar Identity

###### Gualtiero Piccinini (University of Missouri, St. Louis)

Abstract: We define mereologically invariant composition as the relation between a whole object and its parts when the object retains the same parts during a time interval. We argue that mereologically invariant composition is identity between a whole and its parts taken collectively. Our reason is that parts and wholes are equivalent measurements of a portion of reality at different scales in the precise sense employed by measurement theory. The purpose of these scales is the numerical representation of primitive relations between quantities of objects. To show this, we prove representation and uniqueness theorems for composition. Thus, mereologically invariant composition is trans-scalar identity.

Zoom Info: Please email Kay Kirkpatrick (kkirkpat@illinois.edu).