Pith Number

pith:YB7HQLDQ

pith:2016:YB7HQLDQ7JX33PYVOYOLGDTFXM

not attested not anchored not stored refs pending

On the biregular geometry of the Fulton-MacPherson compactification

Alex Massarenti

arxiv:1603.06991 v2 · 2016-03-22 · 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{YB7HQLDQ7JX33PYVOYOLGDTFXM}

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	2026-05-18T00:33:02.507479Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c07e782c70fa6fbdbf15761cb30e65bb1943205a0af10b77d9ebfaf16c40e30b

Aliases

arxiv: 1603.06991 · arxiv_version: 1603.06991v2 · doi: 10.48550/arxiv.1603.06991 · pith_short_12: YB7HQLDQ7JX3 · pith_short_16: YB7HQLDQ7JX33PYV · pith_short_8: YB7HQLDQ

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/YB7HQLDQ7JX33PYVOYOLGDTFXM \
  | 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: c07e782c70fa6fbdbf15761cb30e65bb1943205a0af10b77d9ebfaf16c40e30b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5be2af176a3271105e35c6c6a54ce975807e0c488527fcb3b507b70635c77e57",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-03-22T21:27:03Z",
    "title_canon_sha256": "9b2b6d73b10b964d628540d8ccc79d420d75db74da3f5393796d84d1d94063c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.06991",
    "kind": "arxiv",
    "version": 2
  }
}