Pith Number

pith:SFSYD7JJ

pith:2007:SFSYD7JJPS7ZJVZQ2HEBSMEGLG

not attested not anchored not stored refs pending

Cyclic homology with coefficients

D. Kaledin

arxiv:math/0702068 v2 · 2007-02-03 · math.KT · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SFSYD7JJPS7ZJVZQ2HEBSMEGLG}

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	2026-05-18T04:08:52.942105Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

916581fd297cbf94d730d1c81930865985161989abfd16b80c3d4a7ccdfd692b

Aliases

arxiv: math/0702068 · arxiv_version: math/0702068v2 · doi: 10.48550/arxiv.math/0702068 · pith_short_12: SFSYD7JJPS7Z · pith_short_16: SFSYD7JJPS7ZJVZQ · pith_short_8: SFSYD7JJ

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/SFSYD7JJPS7ZJVZQ2HEBSMEGLG \
  | 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: 916581fd297cbf94d730d1c81930865985161989abfd16b80c3d4a7ccdfd692b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d34f428733a46e6ca91af39fb2722c70e06f7a0b36b4a731716831169a0cc267",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "math.KT",
    "submitted_at": "2007-02-03T09:34:55Z",
    "title_canon_sha256": "8d25418166d9f0648223bbf689b92a2c72cf0e1c015ddb4fc261530c4b913f1d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0702068",
    "kind": "arxiv",
    "version": 2
  }
}