Pith Number

pith:I3KR7UUD

pith:2019:I3KR7UUDWTEPO3JVTP7MMYSLDV

not attested not anchored not stored refs pending

Fundamental Group Schemes of some Quot Schemes on a smooth projective curve

Chandranandan Gangopadhyay, Ronnie Sebastian

arxiv:1909.10775 v2 · 2019-09-24 · 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{I3KR7UUDWTEPO3JVTP7MMYSLDV}

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	2026-07-05T01:17:58.076338Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46d51fd283b4c8f76d359bfec6624b1d724bd9142c18fe1ff2f7bc67f0a9abbf

Aliases

arxiv: 1909.10775 · arxiv_version: 1909.10775v2 · doi: 10.48550/arxiv.1909.10775 · pith_short_12: I3KR7UUDWTEP · pith_short_16: I3KR7UUDWTEPO3JV · pith_short_8: I3KR7UUD

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/I3KR7UUDWTEPO3JVTP7MMYSLDV \
  | 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: 46d51fd283b4c8f76d359bfec6624b1d724bd9142c18fe1ff2f7bc67f0a9abbf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85a0ced86f4e8a5fdf6de9524de360d0b6e63cd6fd586ab704ee7ffca15a2d8a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-09-24T09:34:45Z",
    "title_canon_sha256": "98b09ffe40a9ce994022a4a6edbc0f040b3e1184608f531c9d5828fcb139861a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.10775",
    "kind": "arxiv",
    "version": 2
  }
}