Pith Number

pith:3DYTY7XP

pith:2019:3DYTY7XPIZGXRAKBYTZVCH3BIM

not attested not anchored not stored refs pending

2D Eigenvalue Problem I: Existence and Number of Solutions

Tianyi Lu, Yangfeng Su, Zhaojun Bai

arxiv:1911.08109 v3 · 2019-11-19 · 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{3DYTY7XPIZGXRAKBYTZVCH3BIM}

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	2026-07-05T04:57:59.779352Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d8f13c7eef464d788141c4f3511f61430c393b524f2e3b6d5fda9f77bf354604

Aliases

arxiv: 1911.08109 · arxiv_version: 1911.08109v3 · doi: 10.48550/arxiv.1911.08109 · pith_short_12: 3DYTY7XPIZGX · pith_short_16: 3DYTY7XPIZGXRAKB · pith_short_8: 3DYTY7XP

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/3DYTY7XPIZGXRAKBYTZVCH3BIM \
  | 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: d8f13c7eef464d788141c4f3511f61430c393b524f2e3b6d5fda9f77bf354604

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f03e1c085c1be499c5e4a272dcc6520d4a14f3626b6ca9b8a1b3b922e7a2deeb",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-11-19T06:17:04Z",
    "title_canon_sha256": "cd8d292623d5ffe2fec4ad0a5188ca4264371ec534e611878ec34c2975722825"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.08109",
    "kind": "arxiv",
    "version": 3
  }
}