Pith Number

pith:T2KDPDPF

pith:2013:T2KDPDPFA7HBW6N762CZOPJ2BZ

not attested not anchored not stored refs pending

Bredon Cohomology, K theory and K homology of Pullbacks of groups

Daniel Juan-Pineda, Mario Velasquez, Noe Barcenas

arxiv:1311.3138 v3 · 2013-11-13 · 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{T2KDPDPFA7HBW6N762CZOPJ2BZ}

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	2026-05-18T02:45:04.602374Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e94378de507ce1b79bff685973d3a0e455f485200cfccb491d96d25a628fdbb

Aliases

arxiv: 1311.3138 · arxiv_version: 1311.3138v3 · doi: 10.48550/arxiv.1311.3138 · pith_short_12: T2KDPDPFA7HB · pith_short_16: T2KDPDPFA7HBW6N7 · pith_short_8: T2KDPDPF

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/T2KDPDPFA7HBW6N762CZOPJ2BZ \
  | 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: 9e94378de507ce1b79bff685973d3a0e455f485200cfccb491d96d25a628fdbb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2bf133611d511f9379e9fe025ce66bda8dcfd6628819337fab9cf2ac3f8a104c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2013-11-13T14:15:38Z",
    "title_canon_sha256": "ef9f2e1ff06ac3a70c896b5d2a7221e7feac0affa5daf14555f584d1d45bc015"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.3138",
    "kind": "arxiv",
    "version": 3
  }
}