Pith Number

pith:S4ET7EDI

pith:2020:S4ET7EDINS4P4UTEAVZYNDD2QX

not attested not anchored not stored refs pending

$E_\infty$-cells and general linear groups of infinite fields

Alexander Kupers, Oscar Randal-Williams, Soren Galatius

arxiv:2005.05620 v3 · 2020-05-12 · math.AT · math.KT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S4ET7EDINS4P4UTEAVZYNDD2QX}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

A stable rank filtration on direct sum $K$-theory

Receipt and verification

First computed	2026-07-05T10:02:38.476266Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97093f90686cb8fe52640573868c7a85d846f62534af361f3487a81d5cf8cbf3

Aliases

arxiv: 2005.05620 · arxiv_version: 2005.05620v3 · doi: 10.48550/arxiv.2005.05620 · pith_short_12: S4ET7EDINS4P · pith_short_16: S4ET7EDINS4P4UTE · pith_short_8: S4ET7EDI

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/S4ET7EDINS4P4UTEAVZYNDD2QX \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 97093f90686cb8fe52640573868c7a85d846f62534af361f3487a81d5cf8cbf3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c157916b74ebecc16d0f3424e3778af4432691c4e54a9ba1df5ced6bc5d96c5",
    "cross_cats_sorted": [
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2020-05-12T08:54:07Z",
    "title_canon_sha256": "2d083a1cfe7b4fc961e571bf8fe311ccd40b4b87c0ba7ce3ccaf2737ea3b43c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.05620",
    "kind": "arxiv",
    "version": 3
  }
}