Pith Number

pith:IW75LWHU

pith:2021:IW75LWHU6D4SAVS46OLDTCOFW2

not attested not anchored not stored refs pending

Conics meeting eight lines over perfect fields

Aygul Galimova, Cameron Darwin, Miao Pam Gu, Stephen McKean

arxiv:2107.05543 v2 · 2021-07-12 · 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{IW75LWHU6D4SAVS46OLDTCOFW2}

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	2026-07-05T06:15:59.537581Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45bfd5d8f4f0f920565cf3963989c5b69d7e04fee4cdc7a43f00e1bf015eb8e3

Aliases

arxiv: 2107.05543 · arxiv_version: 2107.05543v2 · doi: 10.48550/arxiv.2107.05543 · pith_short_12: IW75LWHU6D4S · pith_short_16: IW75LWHU6D4SAVS4 · pith_short_8: IW75LWHU

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/IW75LWHU6D4SAVS46OLDTCOFW2 \
  | 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: 45bfd5d8f4f0f920565cf3963989c5b69d7e04fee4cdc7a43f00e1bf015eb8e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d10f47a1fccb5efe50b6c43d819fe26871c8d6b53963548c4e3a3de648a299a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2021-07-12T16:11:35Z",
    "title_canon_sha256": "1a4e33272dcd11d4a96cc040e35dbabc71614a135f26610d589af2b0fb10243c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.05543",
    "kind": "arxiv",
    "version": 2
  }
}