Pith Number

pith:HEEO7B7K

pith:2016:HEEO7B7KHCOSOR5BF54PKAG2GS

not attested not anchored not stored refs pending

Aleksandrov projection problem for convex lattice sets

Ning Zhang

arxiv:1602.05574 v1 · 2016-02-17 · math.MG · math.CO · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HEEO7B7KHCOSOR5BF54PKAG2GS}

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	2026-05-18T01:20:23.728717Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3908ef87ea389d2747a12f78f500da349cd2af978c3d28d24dd84609ac350ea7

Aliases

arxiv: 1602.05574 · arxiv_version: 1602.05574v1 · doi: 10.48550/arxiv.1602.05574 · pith_short_12: HEEO7B7KHCOS · pith_short_16: HEEO7B7KHCOSOR5B · pith_short_8: HEEO7B7K

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/HEEO7B7KHCOSOR5BF54PKAG2GS \
  | 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: 3908ef87ea389d2747a12f78f500da349cd2af978c3d28d24dd84609ac350ea7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6c7238dc991d871c745561f34bae6eef294b3b666468f194bbbdb1a47fc8a87",
    "cross_cats_sorted": [
      "math.CO",
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2016-02-17T17:37:34Z",
    "title_canon_sha256": "d350e39eec3a287be369b14314e6f5e5d6bc005751638a7b03985876c22a6865"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.05574",
    "kind": "arxiv",
    "version": 1
  }
}