Pith Number

pith:FDJTYQ7Z

pith:2011:FDJTYQ7Z4H4TP2TTHES3D6NTHI

not attested not anchored not stored refs pending

Intermediaries in Bredon (Co)homology and Classifying Spaces

Fotini Dembegioti, Nansen Petrosyan, Olympia Talelli

arxiv:1104.2539 v1 · 2011-04-13 · math.AT · math.CT · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FDJTYQ7Z4H4TP2TTHES3D6NTHI}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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.

Receipt and verification

First computed	2026-05-18T04:24:34.651079Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28d33c43f9e1f937ea733925b1f9b33a3911d1b4b1a1ca650cf0b1207acebc4a

Aliases

arxiv: 1104.2539 · arxiv_version: 1104.2539v1 · doi: 10.48550/arxiv.1104.2539 · pith_short_12: FDJTYQ7Z4H4T · pith_short_16: FDJTYQ7Z4H4TP2TT · pith_short_8: FDJTYQ7Z

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/FDJTYQ7Z4H4TP2TTHES3D6NTHI \
  | 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: 28d33c43f9e1f937ea733925b1f9b33a3911d1b4b1a1ca650cf0b1207acebc4a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8328914ca9de0e4fe59a7fd0a864722b55325bd856eaef97f45649c69f4861c",
    "cross_cats_sorted": [
      "math.CT",
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2011-04-13T16:11:33Z",
    "title_canon_sha256": "e15414fddaa459efba0210f41c298cd898ca3107f900c9c8229a4759fa17bab5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.2539",
    "kind": "arxiv",
    "version": 1
  }
}