Pith Number

pith:6455AC2G

pith:2016:6455AC2GBQJPOCHEJFJRP7WGLD

not attested not anchored not stored refs pending

Sectional curvature-type conditions on metric spaces

Martin Kell

arxiv:1601.03363 v2 · 2016-01-13 · math.MG · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6455AC2GBQJPOCHEJFJRP7WGLD}

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	2026-05-18T01:04:50.196162Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f73bd00b460c12f708e4495317fec658f9e34942cfe89191120369a24d0a22a6

Aliases

arxiv: 1601.03363 · arxiv_version: 1601.03363v2 · doi: 10.48550/arxiv.1601.03363 · pith_short_12: 6455AC2GBQJP · pith_short_16: 6455AC2GBQJPOCHE · pith_short_8: 6455AC2G

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/6455AC2GBQJPOCHEJFJRP7WGLD \
  | 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: f73bd00b460c12f708e4495317fec658f9e34942cfe89191120369a24d0a22a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8fc2f5229dd47bfaa785efe944bd6ce06e51a57e2d592187fe659506cee54e25",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2016-01-13T19:50:53Z",
    "title_canon_sha256": "ed7c59075c17bfaf7d75b7a8a6fae8ca4f611ac4649a03ba917c2583f9ec1609"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.03363",
    "kind": "arxiv",
    "version": 2
  }
}