Pith Number

pith:NVOQ25Z5

pith:2018:NVOQ25Z5PBE2SVVW2PRRPPNT3L

not attested not anchored not stored refs pending

Schur complements of selfadjoint Krein space operators

Alejandra Maestripieri, Maximiliano Contino, Stefania Marcantognini

arxiv:1809.01695 v4 · 2018-09-05 · math.FA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NVOQ25Z5PBE2SVVW2PRRPPNT3L}

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	2026-05-17T23:40:14.001534Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d5d0d773d7849a956b6d3e317bdb3dacf0cc3ba614a6b4c1b85225c61224996

Aliases

arxiv: 1809.01695 · arxiv_version: 1809.01695v4 · doi: 10.48550/arxiv.1809.01695 · pith_short_12: NVOQ25Z5PBE2 · pith_short_16: NVOQ25Z5PBE2SVVW · pith_short_8: NVOQ25Z5

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/NVOQ25Z5PBE2SVVW2PRRPPNT3L \
  | 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: 6d5d0d773d7849a956b6d3e317bdb3dacf0cc3ba614a6b4c1b85225c61224996

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e41099dfd3416018f3154af6f8d127f8ba7a6ea2ba8d387f9d6efff4bb0ca98c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2018-09-05T19:12:31Z",
    "title_canon_sha256": "4e64872f22eb329f0c4a05db19afc1b15f03d45cca1ec0418315f79e26af54a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.01695",
    "kind": "arxiv",
    "version": 4
  }
}