Pith Number

pith:URXT7EBW

pith:2017:URXT7EBWSJ2IWDAKY6EJLCORBP

not attested not anchored not stored refs pending

Nef vector bundles on a projective space with first Chern class 3 and second Chern class 8

Masahiro Ohno

arxiv:1703.03571 v2 · 2017-03-10 · 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{URXT7EBWSJ2IWDAKY6EJLCORBP}

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	2026-05-18T00:38:46.162566Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a46f3f903692748b0c0ac7889589d10bce8b9a144c7c6e590f2ac11e1c9901c1

Aliases

arxiv: 1703.03571 · arxiv_version: 1703.03571v2 · doi: 10.48550/arxiv.1703.03571 · pith_short_12: URXT7EBWSJ2I · pith_short_16: URXT7EBWSJ2IWDAK · pith_short_8: URXT7EBW

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/URXT7EBWSJ2IWDAKY6EJLCORBP \
  | 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: a46f3f903692748b0c0ac7889589d10bce8b9a144c7c6e590f2ac11e1c9901c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f3f5fbb4bf260f0525e31b0ec5a91e201991a5f993b50a8ac15dcea334db47f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-03-10T08:08:09Z",
    "title_canon_sha256": "7e45245c39b3ee2c32d6b4a2edfcc1ead0179f22d7eb012d6b531fd02cfbf12d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.03571",
    "kind": "arxiv",
    "version": 2
  }
}