Pith Number

pith:SHIMC2S4

pith:2015:SHIMC2S46WHCIJWTPZO72M35WN

not attested not anchored not stored refs pending

(Co)homology of Spectral Categories

Jonathan A. Campbell

arxiv:1512.07521 v1 · 2015-12-23 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SHIMC2S46WHCIJWTPZO72M35WN}

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	2026-05-18T01:23:49.475508Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91d0c16a5cf58e2426d37e5dfd337db34b42536fa3edb4eec822895a97d0e5ad

Aliases

arxiv: 1512.07521 · arxiv_version: 1512.07521v1 · doi: 10.48550/arxiv.1512.07521 · pith_short_12: SHIMC2S46WHC · pith_short_16: SHIMC2S46WHCIJWT · pith_short_8: SHIMC2S4

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/SHIMC2S46WHCIJWTPZO72M35WN \
  | 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: 91d0c16a5cf58e2426d37e5dfd337db34b42536fa3edb4eec822895a97d0e5ad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c096fb1afbde73b6f77a6e0870be9b625f3e18b283a520a7938fe7db6d9b8de1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2015-12-23T15:43:49Z",
    "title_canon_sha256": "445e0dae07fb816f5526dbc91b9ddfe32b95d8d202cdf8c0ba39f2d510ad4d97"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.07521",
    "kind": "arxiv",
    "version": 1
  }
}