Pith Number

pith:V72NSTKC

pith:2020:V72NSTKCQRSPVNARN7HVRWEV3X

not attested not anchored not stored refs pending

Contour Integral Methods for Nonlinear Eigenvalue Problems: A Systems Theoretic Approach

Mark Embree, Michael C. Brennan, Serkan Gugercin

arxiv:2012.14979 v1 · 2020-12-29 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{V72NSTKCQRSPVNARN7HVRWEV3X}

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	2026-07-05T02:03:03.294693Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aff4d94d428464fab4116fcf58d895ddfdec9c56993d93d12e08a86fbc12b0d5

Aliases

arxiv: 2012.14979 · arxiv_version: 2012.14979v1 · doi: 10.48550/arxiv.2012.14979 · pith_short_12: V72NSTKCQRSP · pith_short_16: V72NSTKCQRSPVNAR · pith_short_8: V72NSTKC

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/V72NSTKCQRSPVNARN7HVRWEV3X \
  | 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: aff4d94d428464fab4116fcf58d895ddfdec9c56993d93d12e08a86fbc12b0d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9fe63f431ed589f55d93a6c55be835894d69bbff33061061a1e9dc319f428f13",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2020-12-29T23:56:06Z",
    "title_canon_sha256": "9d4d3e39787354fc57c215c0a5db100f93394698ba6b42a623a3f65c4c06f58c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.14979",
    "kind": "arxiv",
    "version": 1
  }
}