Pith Number

pith:ADNC263M

pith:1998:ADNC263M4P4AMLEZB7RJ6BQ3FA

not attested not anchored not stored refs pending

Periodic cyclic homology as sheaf cohomology

Guillermo Corti\~nas

arxiv:math/9810144 v1 · 1998-10-23 · math.KT · math.AG · math.CT · math.QA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ADNC263M4P4AMLEZB7RJ6BQ3FA}

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	2026-05-18T04:16:23.510921Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00da2d7b6ce3f8062c990fe29f061b2825390bf969b8fd1206cb1541aefca535

Aliases

arxiv: math/9810144 · arxiv_version: math/9810144v1 · doi: 10.48550/arxiv.math/9810144 · pith_short_12: ADNC263M4P4A · pith_short_16: ADNC263M4P4AMLEZ · pith_short_8: ADNC263M

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/ADNC263M4P4AMLEZB7RJ6BQ3FA \
  | 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: 00da2d7b6ce3f8062c990fe29f061b2825390bf969b8fd1206cb1541aefca535

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "14258ac20da790106980befc48f4b593f5523736720a0ca0ce48a6f5e37c974d",
    "cross_cats_sorted": [
      "math.AG",
      "math.CT",
      "math.QA"
    ],
    "license": "",
    "primary_cat": "math.KT",
    "submitted_at": "1998-10-23T23:29:00Z",
    "title_canon_sha256": "80ab1e0e4179e9131d4c922414df56824fe82336f4392935af68e8e269ee0ad5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9810144",
    "kind": "arxiv",
    "version": 1
  }
}