Pith Number

pith:BAFEGRLA

pith:2012:BAFEGRLAQIGFHXQLZ56Q54LGHZ

not attested not anchored not stored refs pending

The Unstable Slice Filtration

Pablo Pelaez

arxiv:1201.3657 v3 · 2012-01-17 · math.KT · math.AG · 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{BAFEGRLAQIGFHXQLZ56Q54LGHZ}

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	2026-05-18T03:32:17.126486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

080a434560820c53de0bcf7d0ef1663e7dc35dbaf6c9d1dcdb8ce3406ce4cd23

Aliases

arxiv: 1201.3657 · arxiv_version: 1201.3657v3 · doi: 10.48550/arxiv.1201.3657 · pith_short_12: BAFEGRLAQIGF · pith_short_16: BAFEGRLAQIGFHXQL · pith_short_8: BAFEGRLA

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/BAFEGRLAQIGFHXQLZ56Q54LGHZ \
  | 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: 080a434560820c53de0bcf7d0ef1663e7dc35dbaf6c9d1dcdb8ce3406ce4cd23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c47184d8c53dcb6247e68b86a1b929ad75773d49748e7899c3b0787fd1058020",
    "cross_cats_sorted": [
      "math.AG",
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2012-01-17T22:22:03Z",
    "title_canon_sha256": "0758d7d9334c288116adc212eab6f5485296680b4a87ca7874d41c9171f22038"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.3657",
    "kind": "arxiv",
    "version": 3
  }
}