Pith Number

pith:XIXQU4F3

pith:2021:XIXQU4F3U4MBJF4Z5UQ6MWBFRY

not attested not anchored not stored refs pending

Any Regular Polyhedron Can Transform to Another by O(1) Refoldings

Erik D. Demaine, Hanyu Alice Zhang, Jenny Diomidova, Martin L. Demaine, Ryuhei Uehara, Tonan Kamata

arxiv:2109.03997 v1 · 2021-09-09 · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XIXQU4F3U4MBJF4Z5UQ6MWBFRY}

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	2026-07-05T07:05:29.107197Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba2f0a70bba718149799ed21e658258e38e748aea380e4a7a39ac96c4c561499

Aliases

arxiv: 2109.03997 · arxiv_version: 2109.03997v1 · doi: 10.48550/arxiv.2109.03997 · pith_short_12: XIXQU4F3U4MB · pith_short_16: XIXQU4F3U4MBJF4Z · pith_short_8: XIXQU4F3

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/XIXQU4F3U4MBJF4Z5UQ6MWBFRY \
  | 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: ba2f0a70bba718149799ed21e658258e38e748aea380e4a7a39ac96c4c561499

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "79944627318ded473f4fff1136cc637f8855b010a6df1e307a5b63d9e188c440",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2021-09-09T02:19:41Z",
    "title_canon_sha256": "8de2270ed3f2e2acfeeb3fe77ed1a0cf4571333d3973ab96f821222dcfce8963"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.03997",
    "kind": "arxiv",
    "version": 1
  }
}