Pith Number

pith:3TPLURDI

pith:2019:3TPLURDIQS2T4C7GIFG7LMY4ZX

not attested not anchored not stored refs pending

Fundamental Group Schemes of Hilbert Scheme of $n$ Points on a Smooth Projective Surface

Arjun Paul, Ronnie Sebastian

arxiv:1907.04290 v2 · 2019-07-09 · 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{3TPLURDIQS2T4C7GIFG7LMY4ZX}

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	2026-07-05T01:25:22.005481Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dcdeba446884b53e0be6414df5b31ccddd004df1ac05719211f5a024d61e1d3c

Aliases

arxiv: 1907.04290 · arxiv_version: 1907.04290v2 · doi: 10.48550/arxiv.1907.04290 · pith_short_12: 3TPLURDIQS2T · pith_short_16: 3TPLURDIQS2T4C7G · pith_short_8: 3TPLURDI

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/3TPLURDIQS2T4C7GIFG7LMY4ZX \
  | 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: dcdeba446884b53e0be6414df5b31ccddd004df1ac05719211f5a024d61e1d3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13bf98b03f81caf8ab1f34e7f77e3006edc875f155f6ed5ec170424c561e4eee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-07-09T16:55:47Z",
    "title_canon_sha256": "019b849d7758f253032e3009f5f5e578d8b40ce82450159d5292f00a9546e5ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.04290",
    "kind": "arxiv",
    "version": 2
  }
}