Pith Number

pith:UV6RGSCP

pith:2019:UV6RGSCPYH4TJYOOVUIVS25A7I

not attested not anchored not stored refs pending

The Bruce-Roberts number of a function on a hypersurface with isolated singularity

B\'arbara K. L. Pereira, Bruna Or\'efice-Okamoto, Jo\~ao N. Tomazella, Juan J. Nu\~no-Ballesteros

arxiv:1907.02378 v1 · 2019-07-04 · 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{UV6RGSCPYH4TJYOOVUIVS25A7I}

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	2026-05-17T23:41:28.754279Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a57d13484fc1f934e1cead11596ba0fa0ec28011ab22830801c604c034cf89d9

Aliases

arxiv: 1907.02378 · arxiv_version: 1907.02378v1 · doi: 10.48550/arxiv.1907.02378 · pith_short_12: UV6RGSCPYH4T · pith_short_16: UV6RGSCPYH4TJYOO · pith_short_8: UV6RGSCP

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/UV6RGSCPYH4TJYOOVUIVS25A7I \
  | 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: a57d13484fc1f934e1cead11596ba0fa0ec28011ab22830801c604c034cf89d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8497f6a41a340b7de098f56cf4b57ae12e5ba1f9550368a3459e2d9e757509e9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-07-04T12:53:21Z",
    "title_canon_sha256": "ffe59654576e7acab67b10d2e5428e57bad37c8c3c8e1bc1e97eb743c108020c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.02378",
    "kind": "arxiv",
    "version": 1
  }
}