Pith Number

pith:DROFSTPQ

pith:2016:DROFSTPQTZ5EC23DYBOEBAMX6W

not attested not anchored not stored refs pending

Seshadri constants on surfaces with Picard number 1

Krishna Hanumanthu

arxiv:1608.04476 v2 · 2016-08-16 · 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{DROFSTPQTZ5EC23DYBOEBAMX6W}

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	2026-05-18T01:01:51.513342Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c5c594df09e7a416b63c05c408197f5b20bfbe569bf399684abbdf049eee265

Aliases

arxiv: 1608.04476 · arxiv_version: 1608.04476v2 · doi: 10.48550/arxiv.1608.04476 · pith_short_12: DROFSTPQTZ5E · pith_short_16: DROFSTPQTZ5EC23D · pith_short_8: DROFSTPQ

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/DROFSTPQTZ5EC23DYBOEBAMX6W \
  | 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: 1c5c594df09e7a416b63c05c408197f5b20bfbe569bf399684abbdf049eee265

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5214eb007b285dffa5c171eacbbe6928a31c162b2c123ccf10f15dc41b021caa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-08-16T04:16:37Z",
    "title_canon_sha256": "bcfafddce351869674780f14b11569e4a9ccd24a4888f724e9e6e2c74688f88f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.04476",
    "kind": "arxiv",
    "version": 2
  }
}