Pith Number

pith:QC7FL7MN

pith:2017:QC7FL7MNUBPTQPBREVZIM5NH5V

not attested not anchored not stored refs pending

Quantitative Runge Approximation and Inverse Problems

Angkana R\"uland, Mikko Salo

arxiv:1708.06307 v1 · 2017-08-21 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QC7FL7MNUBPTQPBREVZIM5NH5V}

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	2026-05-18T00:37:42.669610Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80be55fd8da05f383c3125728675a7ed680233088789e2de7876410b4688fc51

Aliases

arxiv: 1708.06307 · arxiv_version: 1708.06307v1 · doi: 10.48550/arxiv.1708.06307 · pith_short_12: QC7FL7MNUBPT · pith_short_16: QC7FL7MNUBPTQPBR · pith_short_8: QC7FL7MN

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/QC7FL7MNUBPTQPBREVZIM5NH5V \
  | 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: 80be55fd8da05f383c3125728675a7ed680233088789e2de7876410b4688fc51

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "102148300cfeea9dfb8c658232b8d7e0f804de82cccd6ce5c5f2af2159cc75dc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2017-08-21T16:07:46Z",
    "title_canon_sha256": "01b6897168f929884833e482203d8870429f2474a3b85806bf56c3c50d787675"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.06307",
    "kind": "arxiv",
    "version": 1
  }
}