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Inverted nun

Inverted nun is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Inverted nun rather than just read about it. In short: Inverted nun (נו"ן מנוזרת "isolated nun" or נו"ן הפוכה "inverted nun" or "׆" in Hebrew) is a rare glyph used in classical Hebrew. Its function in the ancient texts is disputed.

Inverted nun — main illustration
Inverted nun — illustration

Key takeaways

  • Inverted nun belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Inverted nun to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Inverted nun from memory before moving on to harder problems.

Reference excerpt

Inverted nun (נו"ן מנוזרת "isolated nun" or נו"ן הפוכה "inverted nun" or "׆" in Hebrew) is a rare glyph used in classical Hebrew. Its function in the ancient texts is disputed. It takes the form of the letter nun in mirror image, and appears in the Masoretic text of the Tanakh in nine different places:

Numbers - twice, 10:35–36: the two verses are delineated by inverted nuns, sometimes isolated outside the passage text and sometimes embedded within words in verses 10:35 and 11:1. Psalms - seven times in Psalm 107 (vs 23-28, vs 40) The images at right show three common variants of the inverted nun – vertically flipped, horizontally flipped, and Z-shaped. Other renderings exist, corresponding to alternative interpretations of the term "inverted". It may also occur with a dot above.

Occurrence and appearance Inverted nuns are found in nine passages of the Masoretic Text of the Bible. The exact shape varies between different manuscripts and printed editions. In many manuscripts, a reversed nun is found, referred to as a "nun hafucha" by the Masoretes. In some earlier printed editions, they are shown as the standard nun upside down or rotated, presumably because the printer did not want to design a new rare character. Recent scholarly editions of the Masoretic text show the reversed nun as described by the Masoretes. In some manuscripts, however, other symbols are occasionally found instead. These are sometimes referred to in rabbinical literature as "simaniyot" (markers). In the Torah, the inverted nuns frame the text:

Whenever the ark set out, Moses said, "Rise up, Lord! May your enemies be scattered; may your foes flee before you." Whenever it came to rest, he said, "Return, Lord, to the countless thousands of Israel."

The nuns are generally positioned close to, but not touching, the first and last words of the couplet. They are supposed to be positioned between the gaps in between the paragraphs, but there is disagreement as to how this should be done. Some texts invert the existing nuns in the Torah text and don't add inverted nuns before and after it. Rashi's commentary states that the name of the city of Haran at the end of the Torah portion Noach also occurs with an inverted nun, but this is not found in existing texts.

Rabbinic basis

The Babylonian Talmud records in the tractate Shabbath, folio 116a, that the markings surrounding Numbers 10:35–36 were thought to denote that this 85-letter text was not in its proper place. One opinion states that it would appear in another location which discusses the order of tribal column, with the position of the Ark already stated there. The 85-letter text found between the nuns is also said to be denoted because it is the model for the fewest letters which constitute a 'text' which one would be required to save from fire due to its holiness. It also suggests that the inverted nuns may suggest the Hebrew word נֵר ner, meaning 'a light'. The tractate Shabbat in the Talmud says regarding the inverted nuns:

It is taught in a baraita: "ויהי בנסוע הארון ויאמר משה" – The Holy One, blessed be He, placed signs above and below this portion, to say that this is not its place. Rabbi [Judah haNasi] said: It was not for this reason, but rather because it is an important book in and of itself. Sifrei explains these "signs":

It was marked with points above and below. The Talmud continues, stating that as this section is a separate book, the portions of Numbers before and after it also count as books and thus the Torah contains seven books in total:

For R. Shemuel bar Nahmani said in the name of R. Yohanan: “She hath hewn out her seven pillars” (Proverbs 9:1) – these are the seven books of the Pentateuch; according to whom? According to Rabbi [Judah Hanasi]. Bar Kappara is known to have considered the Torah as composed of seven volumes in the Gemara "The seven pillars with which Wisdom built her house (Prov. 9:1) are the seven Books of Moses". Genesis, Exodus and Leviticus and Deuteronomy as we know them but Numbers was really three separate volumes: Num 1:1 to Num 10:35, followed by Numbers 10:35–36, and the third text from there to the end of Numbers. R. Shimon Ben Gamliel says: This section will be uprooted from its place and written in its rightful place in the future (but for now it is in its correct location). Why is it written here? So as to separate between first and second retribution [3]. Second retribution is "and the people grumbled". First retribution is "and they traveled from the mountain of G-d (i.e., they eagerly run away from G-d's presence)". Where is it its appropriate place? Rav Ashi says: "In the section dealing with the disposition of the Israelites according to their banners and their travelling arrangements" (Numbers 1:52-2:34, Shabbath 116a). The Mishnah, in tractate Yadayim, states:

A book that became erased yet there remain in it 85 letters, like the section "and it was when the Ark was carried", renders hands impure According to Midrash:

These verses were incorporated into the Torah from the prophecy of Eldad and Meidad. Their prophecy so remained and was explained by the prophet Ezekiel: "So says the Lord, G-d: Are you the one of whom I have spoken in the days of yore through prophets of Israel? And some say that there was a hidden book (of prophecy). The two nuns are similar to khaf and reish – to say that they are ach and rak ("only" and "however"). Ach and rak always exclude – to say that this is not the place of this section. Rabbi [Judah haNasi] says because it is a book of its own. Maharshal ruled that the Talmud only mandates the usual break for a parashah section, and Torah scrolls with extra letters are passul (unfit for ritual use). Rabbi Yechezkel Landau, however, defends the custom, stating that punctuation such as inverted nuns doesn't count as extra letters and thus don't invalidate the scroll.

Elsewhere Inverted nun appears to have been used as a scribal or editorial annotation or text-critical mark. The primary set of inverted nuns is found surrounding the text of Numbers 10:35–36. The Mishna notes that this text is 85 letters long and dotted. The demarcation of this text leads to the later use of the inverted nun markings. Saul Lieberman demonstrated that similar markings can be found in ancient Greek texts where they are also used to denote 'short texts'. Greek sources, especially Alexandrian ones, refer to the sign as reversed sigma.

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Inverted nun

Start with the simplest possible case. Write down what Inverted nun claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Inverted nun before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Inverted nun ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Inverted nun

In research
Inverted nun appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Inverted nun in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Inverted nun is common in secondary-school and first-year university syllabi. It links to neighbouring topics Hebrew alphabet, Punctuation, so understanding it makes those chapters shorter.
In everyday life
Look for Inverted nun outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Inverted nun in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Inverted nun means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Inverted nun out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Inverted nun in simple terms?

Inverted nun (נו"ן מנוזרת "isolated nun" or נו"ן הפוכה "inverted nun" or "׆" in Hebrew) is a rare glyph used in classical Hebrew. Its function in the ancient texts is disputed.

Why does Inverted nun matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Inverted nun?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Inverted nun.

Tags

  • Hebrew alphabet
  • Punctuation

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