Pith Number

pith:VMNNB6HY

pith:2018:VMNNB6HY7PZQ3JXIQUW6OUOJG4

not attested not anchored not stored refs pending

Variable exponent Calder\'on's problem in one dimension

David Winterrose, Tommi Brander

arxiv:1808.04168 v3 · 2018-08-13 · math.AP · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VMNNB6HY7PZQ3JXIQUW6OUOJG4}

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	2026-05-17T23:40:55.948866Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab1ad0f8f8fbf30da6e8852de751c9370ec6d5f1c5f03e3791e006a5be03be13

Aliases

arxiv: 1808.04168 · arxiv_version: 1808.04168v3 · doi: 10.48550/arxiv.1808.04168 · pith_short_12: VMNNB6HY7PZQ · pith_short_16: VMNNB6HY7PZQ3JXI · pith_short_8: VMNNB6HY

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/VMNNB6HY7PZQ3JXIQUW6OUOJG4 \
  | 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: ab1ad0f8f8fbf30da6e8852de751c9370ec6d5f1c5f03e3791e006a5be03be13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9cf0312e3c9081763bc29a7236fad67f40d6d9319ea098cf1739034099916438",
    "cross_cats_sorted": [
      "math.CA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-08-13T12:24:31Z",
    "title_canon_sha256": "0e00d8a5756bd26fe917209a02adef9d3dd031853ae461dd04f7f0954269b52e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.04168",
    "kind": "arxiv",
    "version": 3
  }
}