Pith Number

pith:63G3EIG4

pith:2014:63G3EIG4GUCBVEPHPVEJIHB3K2

not attested not anchored not stored refs pending

On the Derived Categories of Degree d Hypersurface Fibrations

David Favero, Dragos Deliu, Ludmil Katzarkov, Matthew Ballard, M. Umut Isik

arxiv:1409.5568 v1 · 2014-09-19 · math.AG · math.CT · 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{63G3EIG4GUCBVEPHPVEJIHB3K2}

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	2026-05-18T02:42:27.040027Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6cdb220dc35041a91e77d48941c3b56984d6e661423999a2fb9d0e1f86d2307

Aliases

arxiv: 1409.5568 · arxiv_version: 1409.5568v1 · doi: 10.48550/arxiv.1409.5568 · pith_short_12: 63G3EIG4GUCB · pith_short_16: 63G3EIG4GUCBVEPH · pith_short_8: 63G3EIG4

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/63G3EIG4GUCBVEPHPVEJIHB3K2 \
  | 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: f6cdb220dc35041a91e77d48941c3b56984d6e661423999a2fb9d0e1f86d2307

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13303d2caa44cbf1cacfa7a2ed693849d8ee8f43d823a2560c2ca187c3d1f996",
    "cross_cats_sorted": [
      "math.CT",
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-09-19T09:32:26Z",
    "title_canon_sha256": "dcb052b8a0d7b9b20975063d6ac9688e2fc7ae812ea185516e5b557cbbdf7290"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.5568",
    "kind": "arxiv",
    "version": 1
  }
}