Pith Number

pith:AGM2HA4P

pith:2017:AGM2HA4PVTLQV7HO5VXZ4OS52K

not attested not anchored not stored refs pending

On the rationality problem for quadric bundles

Stefan Schreieder

arxiv:1706.01356 v5 · 2017-06-05 · 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{AGM2HA4PVTLQV7HO5VXZ4OS52K}

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	2026-05-17T23:51:00.310034Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0199a3838facd70afceeed6f9e3a5dd2adeb180173c4afa14c22068ad61471d8

Aliases

arxiv: 1706.01356 · arxiv_version: 1706.01356v5 · doi: 10.48550/arxiv.1706.01356 · pith_short_12: AGM2HA4PVTLQ · pith_short_16: AGM2HA4PVTLQV7HO · pith_short_8: AGM2HA4P

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/AGM2HA4PVTLQV7HO5VXZ4OS52K \
  | 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: 0199a3838facd70afceeed6f9e3a5dd2adeb180173c4afa14c22068ad61471d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "939a29d0e86b955891d63d93de2d371e9a1d5ee10ec43073ab9664f75a09706a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-06-05T14:50:00Z",
    "title_canon_sha256": "a46b338adc0cb7c36359b85f05ffe21f344b2a56a238509a0fb5adfecdd3949b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.01356",
    "kind": "arxiv",
    "version": 5
  }
}