Pith Number

pith:SIR7446I

pith:2019:SIR7446IXZKLRVF6BMZ2IR3AXB

not attested not anchored not stored refs pending

On the Nash problem for terminal threefolds of type $cA/r$

Hsin-Ku Chen

arxiv:1907.06326 v1 · 2019-07-15 · 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{SIR7446IXZKLRVF6BMZ2IR3AXB}

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	2026-05-17T23:40:37.921113Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9223fe73c8be54b8d4be0b33a44760b85c8c578a95f0277da604907d7dbd5174

Aliases

arxiv: 1907.06326 · arxiv_version: 1907.06326v1 · doi: 10.48550/arxiv.1907.06326 · pith_short_12: SIR7446IXZKL · pith_short_16: SIR7446IXZKLRVF6 · pith_short_8: SIR7446I

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/SIR7446IXZKLRVF6BMZ2IR3AXB \
  | 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: 9223fe73c8be54b8d4be0b33a44760b85c8c578a95f0277da604907d7dbd5174

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9437fc703d5d9a965680f23ac483be06675610e1d392f4602ed15cb7f4a9840",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-07-15T03:58:38Z",
    "title_canon_sha256": "8109c8e72fb483ac12f6b705260f1379f3b3ff97f9d18bb1832035b5a78ce7cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.06326",
    "kind": "arxiv",
    "version": 1
  }
}