Pith Number

pith:DXUY2WU3

pith:2016:DXUY2WU3LAUGRHU3WVMMZU7R7S

not attested not anchored not stored refs pending

The local Euler obstruction and topology of the stabilization of associated determinantal varieties

Maria A. S. Ruas, Nivaldo G. Grulha Jr., Terence Gaffney

arxiv:1611.00749 v8 · 2016-11-02 · 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{DXUY2WU3LAUGRHU3WVMMZU7R7S}

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	2026-05-18T00:31:13.720700Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1de98d5a9b5828689e9bb558ccd3f1fc865f008415ed2f012e2c7b63dca944f7

Aliases

arxiv: 1611.00749 · arxiv_version: 1611.00749v8 · doi: 10.48550/arxiv.1611.00749 · pith_short_12: DXUY2WU3LAUG · pith_short_16: DXUY2WU3LAUGRHU3 · pith_short_8: DXUY2WU3

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/DXUY2WU3LAUGRHU3WVMMZU7R7S \
  | 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: 1de98d5a9b5828689e9bb558ccd3f1fc865f008415ed2f012e2c7b63dca944f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59c8762bba73b61bf9e6c212649e7f5169194dba78338cc80c946be1d26c9fa3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-11-02T19:47:17Z",
    "title_canon_sha256": "c002929bdc95e866681f5524bb3f2c2a29ee00483c3cba40bbd1137bc82cf6b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.00749",
    "kind": "arxiv",
    "version": 8
  }
}