Pith Number

pith:EBGWNFT4

pith:2017:EBGWNFT4RKQFAXLRWD64QB6LA3

not attested not anchored not stored refs pending

Reifenberg Flatness and Oscillation of the Unit Normal Vector

Max Engelstein, Simon Bortz

arxiv:1708.05331 v1 · 2017-08-17 · math.CA · math.AP · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EBGWNFT4RKQFAXLRWD64QB6LA3}

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	2026-05-18T00:37:53.237524Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

204d66967c8aa0505d71b0fdc807cb06c822b353f567733343c5194bd4e5b662

Aliases

arxiv: 1708.05331 · arxiv_version: 1708.05331v1 · doi: 10.48550/arxiv.1708.05331 · pith_short_12: EBGWNFT4RKQF · pith_short_16: EBGWNFT4RKQFAXLR · pith_short_8: EBGWNFT4

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/EBGWNFT4RKQFAXLRWD64QB6LA3 \
  | 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: 204d66967c8aa0505d71b0fdc807cb06c822b353f567733343c5194bd4e5b662

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2e21e79e51b52b898d97d553faa4d813fc3ccf40a16909b0c57ac525b85a114",
    "cross_cats_sorted": [
      "math.AP",
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2017-08-17T15:26:18Z",
    "title_canon_sha256": "87c092f14f55b6a525cffcde75edc2a1ba4fb5b32978503ad2c2203de788accb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.05331",
    "kind": "arxiv",
    "version": 1
  }
}