Pith Number

pith:EPMOU3G3

pith:2006:EPMOU3G3VQQYOKWP4ZFVFNR5EI

not attested not anchored not stored refs pending

Non-commutative Hodge-to-de Rham degeneration via the method of Deligne-Illusie

D. Kaledin

arxiv:math/0611623 v4 · 2006-11-21 · math.KT · math.AG · math.AT · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EPMOU3G3VQQYOKWP4ZFVFNR5EI}

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	2026-05-18T04:08:53.140980Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23d8ea6cdbac21872acfe64b52b63d223aa4f2cb96736a7fb29eb94621ac3f34

Aliases

arxiv: math/0611623 · arxiv_version: math/0611623v4 · doi: 10.48550/arxiv.math/0611623 · pith_short_12: EPMOU3G3VQQY · pith_short_16: EPMOU3G3VQQYOKWP · pith_short_8: EPMOU3G3

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/EPMOU3G3VQQYOKWP4ZFVFNR5EI \
  | 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: 23d8ea6cdbac21872acfe64b52b63d223aa4f2cb96736a7fb29eb94621ac3f34

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2652badccd9c7908c8047af1ccf690a75832b5e1659bb22d09841e63415d428d",
    "cross_cats_sorted": [
      "math.AG",
      "math.AT",
      "math.RA"
    ],
    "license": "",
    "primary_cat": "math.KT",
    "submitted_at": "2006-11-21T00:04:23Z",
    "title_canon_sha256": "88e19514d6a8aab4259cc6426ee93f42e4c3e62ef297329cc90e921f6b537353"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0611623",
    "kind": "arxiv",
    "version": 4
  }
}