Pith Number

pith:IYLTLMW2

pith:2005:IYLTLMW2U6SLVIXUTLOGZUK2NY

not attested not anchored not stored refs pending

Cyclic homology, cdh-cohomology and negative K-theory

C. A. Weibel, C. Haesemeyer, G. Corti\~nas, M. Schlichting

arxiv:math/0502255 v1 · 2005-02-12 · 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{IYLTLMW2U6SLVIXUTLOGZUK2NY}

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	2026-05-18T04:16:23.568132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

461735b2daa7a4baa2f49adc6cd15a6e0823b0de71a76f30621b253ef78899f5

Aliases

arxiv: math/0502255 · arxiv_version: math/0502255v1 · doi: 10.48550/arxiv.math/0502255 · pith_short_12: IYLTLMW2U6SL · pith_short_16: IYLTLMW2U6SLVIXU · pith_short_8: IYLTLMW2

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/IYLTLMW2U6SLVIXUTLOGZUK2NY \
  | 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: 461735b2daa7a4baa2f49adc6cd15a6e0823b0de71a76f30621b253ef78899f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35a5af354e6c9b7898560c0df218f02bef69a072b5db385bf9d20e7f6deab822",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "math.KT",
    "submitted_at": "2005-02-12T18:26:59Z",
    "title_canon_sha256": "c777ba3a2bde3ba088d841e7e9aa7acedfe2bc42b0cc340419eb71020e366982"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0502255",
    "kind": "arxiv",
    "version": 1
  }
}