Pith Number

pith:UIN44PHO

pith:2013:UIN44PHODJ6TVJAPO24NHJ3NBI

not attested not anchored not stored refs pending

On restricted families of projections in R^3

Katrin F\"assler, Tuomas Orponen

arxiv:1302.6550 v2 · 2013-02-26 · 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{UIN44PHODJ6TVJAPO24NHJ3NBI}

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	2026-05-18T02:32:46.538162Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a21bce3cee1a7d3aa40f76b8d3a76d0a2d8a3a9c78bf165a382c155e44ea20e5

Aliases

arxiv: 1302.6550 · arxiv_version: 1302.6550v2 · doi: 10.48550/arxiv.1302.6550 · pith_short_12: UIN44PHODJ6T · pith_short_16: UIN44PHODJ6TVJAP · pith_short_8: UIN44PHO

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/UIN44PHODJ6TVJAPO24NHJ3NBI \
  | 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: a21bce3cee1a7d3aa40f76b8d3a76d0a2d8a3a9c78bf165a382c155e44ea20e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "328c157cb769e9ce46535e8379b3af9078c45768d9cb92a212c1e718af28148a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2013-02-26T19:30:51Z",
    "title_canon_sha256": "238a27ce2f2cfca5a1a826b8ee98ac37c5b30a041fcbe4a7112f002079875aa9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.6550",
    "kind": "arxiv",
    "version": 2
  }
}