Pith Number

pith:EGKXUSZ5

pith:2022:EGKXUSZ5IRJF2ABC36HZHQWMZN

not attested not anchored not stored refs pending

On a cohomological property of the center of a resolution

Donghyeon Kim

arxiv:2209.07720 v4 · 2022-09-16 · 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{EGKXUSZ5IRJF2ABC36HZHQWMZN}

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	2026-06-02T01:03:27.835985Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21957a4b3d44525d0022df8f93c2cccb4daf5a59aa2d7a671e14423eaad0094c

Aliases

arxiv: 2209.07720 · arxiv_version: 2209.07720v4 · doi: 10.48550/arxiv.2209.07720 · pith_short_12: EGKXUSZ5IRJF · pith_short_16: EGKXUSZ5IRJF2ABC · pith_short_8: EGKXUSZ5

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/EGKXUSZ5IRJF2ABC36HZHQWMZN \
  | 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: 21957a4b3d44525d0022df8f93c2cccb4daf5a59aa2d7a671e14423eaad0094c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "409d84751ae6334428cf15d3f23661203e6a89bc6f9aa8a8d4a942efc67820f9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2022-09-16T04:58:41Z",
    "title_canon_sha256": "b7bf324b99edbe2f527cd651c9be5c93a91ffbcd97c9066b7438c18bb8942af4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2209.07720",
    "kind": "arxiv",
    "version": 4
  }
}