Pith Number

pith:RNNTYWG3

pith:2019:RNNTYWG3RWZO3N6EMHOD6KP3JA

not attested not anchored not stored refs pending

Covers of rational double points in mixed characteristic

Javier Carvajal-Rojas, Karl Schwede, Kevin Tucker, Linquan Ma, Thomas Polstra

arxiv:1908.01416 v2 · 2019-08-04 · math.AG · math.AC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RNNTYWG3RWZO3N6EMHOD6KP3JA}

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	2026-07-05T04:49:10.183325Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8b5b3c58db8db2edb7c461dc3f29fb4831faad6f92bd2271ec6c87a8343b8af2

Aliases

arxiv: 1908.01416 · arxiv_version: 1908.01416v2 · doi: 10.48550/arxiv.1908.01416 · pith_short_12: RNNTYWG3RWZO · pith_short_16: RNNTYWG3RWZO3N6E · pith_short_8: RNNTYWG3

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/RNNTYWG3RWZO3N6EMHOD6KP3JA \
  | 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: 8b5b3c58db8db2edb7c461dc3f29fb4831faad6f92bd2271ec6c87a8343b8af2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1fc3af3203319198cb234c28e506afcb3efa81e7dd832d71e2d4835ea892561a",
    "cross_cats_sorted": [
      "math.AC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-08-04T22:34:36Z",
    "title_canon_sha256": "a0bda6a5934795083a287d6aa39346e8516419713ee84cb46b99e00c948f9264"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.01416",
    "kind": "arxiv",
    "version": 2
  }
}