Pith Number

pith:EB3HFVN4

pith:2017:EB3HFVN4UTL624HZ5J3TTZUVSE

not attested not anchored not stored refs pending

Single point Seshadri constants on rational surfaces

Brian Harbourne, Krishna Hanumanthu

arxiv:1706.01648 v2 · 2017-06-06 · 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{EB3HFVN4UTL624HZ5J3TTZUVSE}

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	2026-05-18T00:27:57.301866Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

207672d5bca4d7ed70f9ea7739e69591228966bf3ff150d0fc7c4a1f04c352b8

Aliases

arxiv: 1706.01648 · arxiv_version: 1706.01648v2 · doi: 10.48550/arxiv.1706.01648 · pith_short_12: EB3HFVN4UTL6 · pith_short_16: EB3HFVN4UTL624HZ · pith_short_8: EB3HFVN4

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/EB3HFVN4UTL624HZ5J3TTZUVSE \
  | 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: 207672d5bca4d7ed70f9ea7739e69591228966bf3ff150d0fc7c4a1f04c352b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa93ef51c1cd506aeb35f423a197cbbbcbf152ed008eb0d99d28c470852a4b06",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-06-06T08:17:56Z",
    "title_canon_sha256": "f430a358162b3d1042418acf8e4048631b9d2087933721f691b7bc3a528bfa99"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.01648",
    "kind": "arxiv",
    "version": 2
  }
}